This is the jaw-dropping moment a police officer karate kicks a suspected drunk driver TWICE around the head.The act of violence was viewed by his fellow cops, who just stood by watching. In the video, the 41-year-old officer kicks the suspect with his left foot and then his right while the victim is handcuffed to a chair at the police station in Majorca. And colleagues of the officer failed to intervene - with one accused of moving a camera after realising the attack has been filmed on CCTV.The officer now faces four years behind bars if convicted on charges of torture and wounding. He told at a court in Palma on Tuesday that he had "lost his nerves" after the suspect "threatened to slice up his daughter". He also insisted he knew he was being filmed and apologised to his victim.He said: "It wasn't the right behaviour. It wasn't the sort of behaviour a policeman should display." The police officer accused of moving the camera said he knocked it by accident as he got his extendable baton out. The attack took place in September 2011 after the assault victim had been arrested upon failing a breath test in the wake of a road accident.