One of the police officers mowed down in a hit-and-run murder bid has been released from hospital.

The man and his his female colleague were left seriously injured after being ploughed down late on Sunday night after they responded to an incident in Glasgow.

A major manhunt is under way for the driver and occupants, believed to be three or four men, and police are treating the incident on Banner Drive in Knightswood at 11.15pm as attempted murder.

The female officer, 30, is understood to have been dragged under the car and was taken to intensive care after they stopped the car.

She has now been released from the unit but remains in hospital.

It comes after detective inspector Ian Hylands told STV News the pair would make a full recovery.

Police have confirmed the car used in the attack, which was found burnt out a short time later in Scotstoun, was stolen in Glasgow a number of months ago.

STV News understands they know who the driver behind the attack was and an extensive hunt is under way.

A witness to the incident, who asked not to be named, told STV News: "I had just gone over to my window to close the blinds and it all happened. I think the two police officers were trying to grab the driver out of his car.

"The next thing he just reversed the car and hit the two of them. He got the female officer the worst. I think she was run over.

"The male police officer went to help her and the next minute the driver in the car put his foot down and went down the road. He hit about three or four other cars, and the police car, and just sped off."

The witness added: "When she went down I heard the whack and the crash, and it was a horrible thing to hear. It's something you never want to see.

"We ran down to help them and got blankets out of our car. It was freezing and it was raining. She was conscious - the pair of them were more worried about each other than anything else.

"The two of them put on their uniforms to help people and the next minute the two of them are in hospital. It was sickening."

The officers stopped a car to speak to the men inside when the car reversed and struck both officers before speeding off.

A blue Nissan Qashqai was found abandoned and burnt out in Scotstoun.

A statement from Police Scotland on Tuesday said: "Forensic officers are carrying out a detailed examination of the blue Nissan Qashqai. Officers have now confirmed that the car was stolen.

"Detectives are also scrutinising CCTV footage for any additional information which could assist the ongoing investigation.

"Officers from the Greater Glasgow Division and throughout Police Scotland wish both officers a speedy recovery."

It added: "Members of the public are also thanked for their messages of support and good wishes for the officers, some of which have come from as far afield as the United States.

"If anyone has any information or knowledge about this incident or the suspects, please contact the inquiry team at Drumchapel Police Office via 101.

"Alternatively, please call Crimestoppers on 0800 555 111 where information can be given anonymously."