A policeman fired a shot but missed two car thieves who injured another officer in Tuen Mun and escaped under the noses of a team of detectives. The men, who police said are in their 40s, were still at large last night. The incident took place on Saturday night at a remote open-air car park in Hing Fu Street, near Po Tin Estate, where detectives from the organised crime and triad bureau and the criminal intelligence bureau, acting on tip-offs, were conducting an anti-vehicle crime operation. They spotted a car entering the car park at about 8pm. Two men got out of the vehicle and attempted to break into another car parked there. Officers who had been in concealed positions approached the suspects to make their arrests. 'The two men resisted fiercely, causing a police officer to be slightly injured,' a police statement said yesterday. One suspect then got back into the car while the other man took the car they had just broken into and they drove off. The car driven by the first suspect rammed a police vehicle and the driver then aimed his car at a sergeant, officers said. A detective fired one shot at the first suspect. 'A police officer at the scene gave a verbal warning to the [first suspect] but was ignored. To avoid the car ramming into police officers, the officer fired one shot at the driver. Initial investigations suggested that the shot did not hit anyone,' the police statement said. The two suspects managed to escape but officers later arrested a 37-year-old woman at the scene. Police identified her as a staff member of the car park operator. The stolen car was found abandoned in San Fuk Road, 500 metres from the crime scene. The vehicle was reported missing in Sham Shui Po on Friday, police said. Dozens of police officers in camouflage returned to the scene early yesterday but could not find the shell case. Police arrested a 25-year-old woman in Yuen Long who is the registered owner of the car used by the thieves. A police spokesman said the force would not discuss the number of officers involved or other details of Saturday night's operation. Officers from the organised crime and triad bureau are following up the case.