Police are searching for a couple who allegedly tried to ram a security guard when he asked them to stop having sex in the car.

The driver, estimated to be in his 20s, opened the window of a white sedan when a security guard knocked on a 'bouncing' car at a market's parking space in Bangkok, Thailand on March 20 evening.

Cops said the man, described by the guard as 'bald,' reportedly shouted 'What's your problem,' before starting the car and driving in the direction of the security guard.

CCTV footage shows the guard walking towards the sedan and talking to the driver who sped away. The guard was also seen evading the car as it left the parking space.

Security guard Warat Luntong, 20, said: 'He yelled at me asking what my problem was. I did not see their faces clearly but if I do find them again, I will remember who it was.

'I have been working as a security guard here for eight months. It was my duty to check the cars parked outside because it was beyond the market’s opening hours.'

Warat added the driver had a shaved head with a 'skinny woman' in her early 20s on the front seat. Both of them were wearing masks while they were romping.

He said: 'The driver had a shaved head and bald with a skinny woman. This is not the first time I caught couples in the car in the middle of the night.

'Sometimes I would even see people getting on top of each other and sometimes I had to wait for a car to stop rocking before I walked over to them.'

The registered car owner, who has not been identified, visited the police station but she claimed that one of her friends borrowed it that night and lent it to another person who might have been the driver. She claimed her car had disappeared following the tryst.

She said: ‘I still don’t know where the driver went. I am here at the station today to take responsibility for what had happened since it is my car. I will pay for any damages the security guard suffered.'

Officers are still searching for the driver while the car owner has been asked to tell help them find the man.

A police spokesman for the Saimai district station said officers were unable to trace the car on CCTV after it left the scene.