A pin around this size was left in a seat on a bus in Tsuen Wan today, injuring a passenger

Police are hunting a suspect who left a 3cm spike in a bus seat in Tsuen Wan after a passenger was injured in his back.

Bus driver Mr Wong, 38, reported the case to the police after passenger Mr Tai, 36, complained of a “tingle in his back” after getting off the bus and then finding a “needle in his pants”.

Tai was injured but did not require hospital treatment. Police seized the needle and are treating the case as criminal damage.

The incident happened at Sai Lau Kok Road Public Transport Interchange in Tsuen Wan.

Four needles poked passengers on KMB buses in 2018

Similar attacks have taken place before: in 2018, three passengers were injured on KMB buses by similar needles sticking out of seats, while one passenger was saved a pierced bottom by his thick leather wallet.

At the time, KMB reassured passengers that each double-decker bus was equipped with nine security cameras.

And in 2019, a syringe was planted in a Long Win bus in Tung Chung, injuring a 30-year-old woman.