Teenage girls arrested for attempting to rob cabbie

Two teenage girls have been arrested after they tried to rob a taxi driver around midnight.Police are looking for a third girl who had fled the scene.The robbery occurred when the three girls took a taxi from Siu Sai Wan to Kwai Chung. When they arrived at their destination, the trio tried to rob the driver at knifepoint. As the girls tried to make their escape with a mobile phone and HK$600 in cash, two of them were caught by the driver of a passing ambulance.The two girls are aged 14 and 15.