Three London men are facing violent robbery charges following an incident in downtown London Tuesday night.

London police say a man was approached by four people at Bathurst and Clarence Streets and asked to hand over personal property.

A physical altercation ensued and the man was stabbed in the hip. He was taken to hospital for treatment and has since been released.

Police have charged 18-year-old John Brown, 19-year-old Ronnie Doxtator and 20-year-old Dakota Turner with robbery with violence and assault causing bodily harm charges.

Police are searching for a fourth suspect and they say one of the suspects was known to the victim.