Police have arrested a 23-year-old man allegedly involved in three head-bashing robberies in Sham Shui Po and Tsuen Wan.

He was apprehended in his Tin Shui Wai flat about 5.30pm yesterday.

Earlier this month a man used a hammer to hit three people's heads and rob them after entering their flats.

Any other victims who have not come forward should call Police on 2760 5509 or 9020 6530.