A businessman was fighting for his life in hospital last night after he slashed his wrists and gassed himself with charcoal fumes in his truck, which nosed down a slope outside Gallant Garden - the official burial ground for civil servants killed in the line of duty - in Fanling. His suicide bid was discovered when workers heard a loud bang and discovered that the truck had plunged down the slope off Kiu Tau Road at about 2pm. Emergency crews were then called. Tang Ping-kwan, 27, who runs a construction company, was found unconscious in the rear passenger seat of his 5.5-tonne goods vehicle with cuts to his wrists. Police found burning charcoal in a container in the front passenger seat. The man had stopped breathing and had no pulse when he was rescued. He was taken to North District Hospital where doctors were battling to save his life. At 5.30pm, he was in a critical condition. Police, who have classified the case as an attempted suicide, said no note was found on him and officers were investigating why he tried to kill himself.