Police officers form a cordon around a man, suspected to be involved in the kidnapping of a tycoon's granddaughter, as he is brought to Choi Hun MTR station for investigation in Hong Kong, China May 5, 2015. The kidnapping, an armed robbery and a spate of high-profile burglaries in the homes of Hong Kong's elite have stirred concern in a city ranked as one of the safest in the world. REUTERS/Tyrone Siu