A Swiss police officer stands near workers cleaning a platform after a 27-year-old Swiss man's attack on a Swiss train at the railway station in the town of Salez, Switzerland August 13, 2016. REUTERS/Arnd Wiegmann

A Swiss police officer stands near workers cleaning a platform after a 27-year-old Swiss man’s attack on a Swiss train at the railway station in the town of Salez, Switzerland August 13, 2016. REUTERS/Arnd Wiegmann

A Swiss police officer stands near workers cleaning a platform after a 27-year-old Swiss man's attack on a Swiss train at the railway station in the town of Salez, Switzerland August 13, 2016. REUTERS/Arnd Wiegmann

August 13, 2016 8:43 PM (UTC+8)