Four handsome teenagers presented themselves on the internet as the Hong Kong version of Taiwanese boy-band F4 as a ruse to lure potential robbery victims, police said yesterday. When their victims showed up to meet the 'band', they were beaten and had their mobile phones stolen. But the alleged scam came to an end yesterday when police recognised three of the youngsters from pictures posted on their website and nabbed them. The three, all 17, were being held for questioning last night and a hunt was on for a fourth. Like F4, the four wore long hair and no shirts, showing off their muscled upper bodies in photographs posted on a Yahoo website. The hunt for the four began after two schoolboys aged 17 were robbed of their phones earlier this month, Senior Inspector Chan Hoi-kong of Shamshuipo said. The two victims told investigators they met the gang through an internet chat room and then arranged to meet them at the Dragon Centre in Yuen Chow Street, Shamshuipo, on October 6. 'After they played with the suspects in a game centre, they were taken to a rear staircase where they were punched and kicked and robbed,' Mr Chan said. Officers believe that the gang sold the stolen mobile phones to hawkers in Apliu Street, Shamshuipo. The arrests came after undercover policemen went online to chat with the boys. Beat policemen told to look out for the boys spotted the trio in Shekkipmei Estate at about 5.30pm yesterday. No charges had been laid last night. Police said anyone who was robbed in a similar way should contact investigators on 23607280.