Police officers work at the site of a shooting, in which two people were killed, in Halle, Germany October 9, 2019. Several German media outlets said the perpetrator acted alone in the attacks, in which a woman was killed outside the synagogue and a man in the kebab shop. Police said they had detained one person.

REUTERS/Hannibal Hanschke 

Bullet casings are pictured after a shooting in the eastern German city of Halle on October 9, 2019. REUTERS/Marvin Gaul 

Forensic officers work at the site of a shooting in Halle, Germany October 9, 2019. REUTERS/Hannibal Hanschke 

People are being escorted with a bus away from the site of a shooting, in which two people were killed, in Halle, Germany October 9, 2019. REUTERS/Fabrizio Bensch 

Police secure the area after a shooting in the eastern German city of Halle on October 9, 2019. REUTERS/Marvin Gaul 

German Chancellor Angela Merkel attends a gathering at the New Synagogue in Berlin, Germany, October 9, 2019, after two people were killed in a shooting in the eastern German city of Halle. REUTERS/Christian Mang 

Forensic officers work at the site of a shooting, in which two people were killed, in Halle, Germany October 9, 2019. REUTERS/Hannibal Hanschke 

A Jewish man is being escorted from from the site of a shooting, in which two people were killed, in Halle, Germany October 9, 2019. REUTERS/Fabrizio Bensch 

Police officers gather in Wiedersdorf, Germany October 9, 2019. REUTERS/Fabrizio Bensch 

People put candles during a gathering at the New Synagogue in Berlin, Germany, October 9, 2019, after two people were killed in a shooting in the eastern German city of Halle. REUTERS/Christian Mang 

Lit candles are seen with a sign reading "I am horrified" during a gathering at the New Synagogue in Berlin, Germany, October 9, 2019, after two people were killed in a shooting in the eastern German city of Halle. REUTERS/Christian Mang 

A woman looks through a window as she is being escorted in a bus away from the site of a shooting, in which two people were killed, in Halle, Germany October 9, 2019. REUTERS/Fabrizio Bensch 

Police officers cordon off an area in Wiedersdorf, Germany October 9, 2019. REUTERS/Fabrizio Bensch 

Forensic officers work at the site of a shooting, in which two people were killed, in Halle, Germany October 9, 2019. REUTERS/Hannibal Hanschke 

A police officer stands guard next to a police car in Halle, Germany October 9, 2019. REUTERS/Fabrizio Bensch 

People are being escorted with a bus away from the site of a shooting, in which two people were killed, in Halle, Germany October 9, 2019. REUTERS/Fabrizio Bensch 

Police officers gather in Wiedersdorf, Germany October 9, 2019. REUTERS/Fabrizio Bensch