Police were hunting for six suspects after petrol bombs were hurled at a Hong Kong metro station on Thursday, forcing the rail operator to immediately evacuate the area and close the site.
The incident came just hours after police arrested a 29-year-old man and two teenagers in separate incidents, reports the South China Morning Post newspaper.
The Mass Transit Railway (MTR) Corporation said black-clad “rioters” hurled petrol bombs at two escalators and a shop at the Ngau Tau Kok station in Kowloon at around 1 a.m. They also vandalised ticket machines and other facilities on the concourse.
The suspects fled before police arrived, no one was injured, and rail services resumed later in the day.