Police and firemen had to jack up a cross-border bus to rescue a suspected illegal immigrant found trapped underneath last night. The bus had returned from Shekou, through Shenzhen, before the man was found. The man, about 30, was taken to Prince of Wales Hospital with serious neck and leg injuries. He was carrying no identification, but had a small amount of mainland currency on him. Police said he appeared to be an illegal immigrant who had hidden in a small hollow area above the rear wheels of the Citybus. Driver Fong Fuk-tong, 39, said he had returned through the Man Kam To crossing at 3 pm and stopped in Central, Tsim Sha Tsui and the Sha Tin terminus. He jumped back into the bus about 7.40 pm, when he heard the man's screams.