Police arrested a 27-year-old autistic man in a Mong Kok branch of a Cafe De Coral at 10pm on Thursday after officers identified him as the commuter who had been seen with a gun on an MTR train on Wednesday.

After reviewing closed-circuit television footage, police identified the suspect who boarded a Central-bound MTR train, but disappeared when officers arrived at Admiralty station, Oriental Daily reported.

Read: Man armed with ‘gun’ triggers search in MTR stations

A total of three replica firearms, a rifle and two pistols, were seized from his home on Chatham Road North in Hung Hom.

Police sources said the man liked playing with replica guns, Apple Daily reported.

A special protocol will be followed during the investigation because he is autistic.