A jewellery trader was robbed of $2 million worth of diamonds at knifepoint by a gang of men in the lift lobby of the building where he worked, a jury heard yesterday. Prosecutor Robin Walters said identification held the key to the case as there were no closed-circuit television cameras in the lobby and the view of the only witness to the crime was blocked. He added that the victim, Dan Lipshitz, 32, did not pick out any of the three accused on trial for robbery in identity parades last year. Alfonso Giovanni Rodriguez, 40, Henry Guillermo Patino Hernandez, 26, and Jesus Alirio Palma Hernandez, 33, - all from Colombia - previously pleaded not guilty to one charge of robbery. Two others are accused over the theft. The Court of First Instance heard that Lo Yam-shing, 67, the caretaker of Kai Tak Commercial Building in Central where Mr Lipshitz had an office, was in the management office when four or five men followed Mr Lipshitz into the lift lobby at 1.16pm on June 21 last year. Two of the men stood in front of Mr Lo, while the others walked towards Mr Lipshitz, the court heard. 'Suddenly he was pushed to the wall,' Mr Walters said. One of the men produced a knife 5cm-8cm long. 'Mr Lipshitz tried to fight them off but got injured.' He said one of the men snatched the briefcase, which contained 191 diamonds, and fled. Mr Lipshitz suffered a 6cm cut on his left elbow, a dislocated shoulder and bruising. The court heard plain-clothes police officers on surveillance saw a group of people outside the building, whom they described as of Spanish or South American appearance. Several men were later caught in Central. The briefcase and the diamonds were later recovered. The hearing before Deputy Judge Bernard Whaley continues.