This is the shocking moment a drink-driver stabs a police officer to death and badly injures another after being placed in the back of their patrol car.
The horrific video footage was captured on a camera fitted to the inside of the police car in the village of Kharlovo in Russia's Altai Krai region.
The two officers are seen in the front of the car when the 38-year-old suspect is seated in the back seat having handed over his papers during a routine traffic stop.
He appears to be almost falling asleep, but suddenly pulls out a kitchen knife and repeatedly stabs the policeman sitting on the right of the video.
The fatally injured officer, 34-year-old Aleksandr Lyamkin, struggles desperately to fend off his attacker while trying to open the car door.The attacker then turns the weapon onto his colleague, who was also seriously wounded.
Officer Lyamkin eventually manages to get out of the car and walks a short distance before collapsing on the floor covered in blood.
His colleague meanwhile rushes to the rear of the car and holds the door shut as the knifeman tries to get out before finally giving up.
Calling for backup while holding the door closed, other officers arrived and arrested the 38-year-old who, it was later confirmed, was drunk.
Although not named, it was revealed that the attacker had a criminal record but had managed to get work as a truck driver and was concerned he might lose his job for drink-driving.
He now faces between 12 and 25 years in prison after being charged over the attack.
The second officer was taken to hospital with serious injuries, but is expected to survive.
Police spokeswoman Ludmila Ryazantseva said: 'The investigation is ongoing but this is a tragic day for all police officers.
'The dead officer was married with a wife and two children, an 11-year-old son and a five-year-old daughter.'