Veteran dancehall deejay Ninja Man who is awaiting trial for murder was knocked unconscious by a prisoner.

The incarcerated dancehall deejay who has been at Horizon Adult Remand Centre, in Kingston since 2009 was injured two weeks ago at the facility.

Reports are that on August 3, Ninja Man was walking to his cell, when he was attacked by a prisoner who hit him in the head with a stone hidden in a sock.

The accused has since been charged with unlawful wounding. The two are expected to return to court on Monday. The matter was first mentioned on Thursday.

The police are investigating.

Ninja Man and his 20 year old son along with two others are charged with the shooting death of a 20 year old man. The incident occurred on March 16, 2009.