Crime squad officers were called in after a male passenger was injured by a needle on board a KMB double-decker in a busy Hong Kong shopping district on Friday, bringing the number of such reports to more than a dozen in recent weeks.

The incident happened on a Route 904 bus at 1.43pm, when it reached Nathan Road, Mong Kok. The route runs between Kennedy Town and Lai Chi Kok.

A police spokesman said initial information showed the man was injured in the thigh by a needle, which was found at the scene. The victim alerted the driver, who called police.

The injured passenger was taken to Kwong Wah Hospital in Yau Ma Tei. So far, no one has been arrested.

Man arrested over needles on Hong Kong buses refused bail.

There have been at least 13 reports of needles found on KMB vehicles since June 27.

Two cases were reported last Friday, two days after police arrested Mok Cham-sum, 30, in connection with three previous reports.

Mok was charged with three counts of wounding and one count of attempted wounding, and appeared at Sha Tin Court last Saturday. He was remanded in custody, and the case was adjourned to next Tuesday.

Separately on Tuesday, police arrested five men over a spate of seat slashings on KMB buses reported by thestar.