A 16-year-old girl was critically injured and four other teenage girls hurt when a van driver knocked them down as they waited for a bus. He allegedly punched one of them when she complained. Student Fan Kit-ling was in a critical condition yesterday. Her classmate, Yau Ngai-hin, 18, was in a serious condition, while Fong Kar-yan, 18, and Tai Chi-yan, 16, were stable. They were all admitted to Caritas Medical Centre. A fifth victim, 17, was allowed to leave the hospital after treatment. It was not known which student was allegedly punched. The 22-year-old van driver was arrested after the incident in Cheung Sha Wan and released on $500 police bail pending further investigations. The incident happened just before 2am when the driver lost control of his vehicle in Castle Peak Road outside Garden Bakery. The driver told police he and his 20-year-old girlfriend, who was carrying a baby girl, were quarrelling when the woman tried to open the van door and jump out. The man told police that when he tried to stop her, he lost control of the van, mounted the pavement and knocked down five girls. Four of the girls - Ms Fan, Ms Yau, Ms Tai and Ms Fong - were waiting for a bus home after celebrating winning a school singing competition. The fifth victim was also waiting for a bus home with her boyfriend.