A man embraces a woman as she reacts outside the University Hospital, which was the site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

A man embraces a woman as she reacts outside the University Hospital, which was the site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

People light candles to pay tribute to the victims of the shooting outside the University Hospital in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Black flag hangs outside the University Hospital, which was the site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Flowers and candles lie on the ground in tribute to the victims of the shooting, outside the University Hospital in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

People light candles to pay tribute to the victims of the shooting outside the University Hospital in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

People light candles to pay tribute to the victims of the shooting outside the University Hospital in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Czech Prime Minister Andrej Babis talks to the media outside the University Hospital, which was the site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Czech Prime Minister Andrej Babis walks out of the University Hospital, which was the site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Czech Prime Minister Andrej Babis walks out of the University Hospital, which was the site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Czech Republic's Prime Minister Andrej Babis talks to the media outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Czech Republic's Prime Minister Andrej Babis talks to the media outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

A woman talks to a police officer standing guard outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Director of Ostrava police, Tomas Kuzel, talks to the media outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Director of Ostrava police, Tomas Kuzel, talks to the media outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Director of Ostrava police, Tomas Kuzel, talks to the media outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

A police officer stands outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Police officers stand outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Police line blocks the access to the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Police officers walk outside the University Hospital, which was a site of a shooting, in Ostrava, Czech Republic, December 10, 2019. REUTERS/Radovan Stoklasa

Police officers stand guard near the site of a shooting in front of a hospital in Ostrava, Czech Republic, December 10, 2019. REUTERS/Lukas Kabon

Police officers are seen near the site of a shooting in front of a hospital in Ostrava, Czech Republic, December 10, 2019. REUTERS/Lukas Kabon

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic captain Petr Pala and Katerina Siniakova react after the match against Romania's Mihaela Buzarnescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic captain Petr Pala and Barbora Krejcikova react after the match against Romania's Mihaela Buzarnescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic captain Petr Pala and Katerina Siniakova react after the match against Romania's Mihaela Buzarnescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 The Romania team celebrate with fans REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu celebrates with captain Florin Segarceanu after her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Irina-Camelia Begu celebrates after her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Irina-Camelia Begu celebrates after her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Simona Halep celebrates after the match between Romania's Monica Niculescu and Irina-Camelia Begu against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu and Irina-Camelia Begu celebrate during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu celebrates with captain Florin Segarceanu after her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu celebrates after her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Barbora Krejcikova and Katerina Siniakova react during their match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Barbora Krejcikova and Katerina Siniakova react during their match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu celebrates after her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu celebrates after her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu and Irina-Camelia Begu speak with captain Florin Segarceanu during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Barbora Krejcikova and Katerina Siniakova during their match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu and Irina-Camelia Begu during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu and Irina-Camelia Begu during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu and Irina-Camelia Begu during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu reacts during her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu reacts during her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu and Irina-Camelia Begu react during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Mihaela Buzarnescu reacts after losing her match against Czech Republic's Katerina Siniakova REUTERS/David W Cerny TPX IMAGES OF THE DAY

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Simona Halep in action during her match against Czech Republic's Karolina Pliskova REUTERS/David W Cerny TPX IMAGES OF THE DAY

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu in action during her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Barbora Krejcikova celebrates with Katerina Siniakova during their match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Katerina Siniakova celebrates with Barbora Krejcikova during their match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Barbora Krejcikova celebrates with Katerina Siniakova during their match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Katerina Siniakova in action during her doubles match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Katerina Siniakova in action during her doubles match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu and Irina-Camelia Begu in action during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu and Irina-Camelia Begu in action during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Katerina Siniakova in action during her doubles match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Katerina Siniakova in action during her doubles match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Monica Niculescu reacts during her doubles match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Romania's Irina-Camelia Begu and Monica Niculescu react during their match against Czech Republic's Barbora Krejcikova and Katerina Siniakova REUTERS/David W Cerny

Tennis - Fed Cup - Fed Cup World Group - First Round - Czech Republic v Romania - Ostravar Arena, Ostrava, Czech Republic - February 10, 2019 Czech Republic's Barbora Krejcikova and Katerina Siniakova react during their match against Romania's Irina-Camelia Begu and Monica Niculescu REUTERS/David W Cerny