A former American Marine has been jailed for life after being found guilty of shooting dead a police officer in Leeds. Mr Justice Moses said that David Bieber, 38, should spend the rest of his life in jail. The jury at Newcastle Crown Court agreed unanimously that Bieber killed PC Ian Broadhurst with a 9mm handgun on Boxing Day last year. Bieber, of Springwood Road, Leeds, was also found guilty of two counts of attempting to murder PC Neil Roper, 45, and PC James Banks, 27, whose radio was hit by a bullet on December 26, 2003. He was given two separate life sentences for the attempted murders, and eight years for firearms offences. The officers were shot after they stopped a suspected stolen vehicle driven by Bieber. The jury was not told Bieber is a steroid abuser who is wanted in the US for involvement in a murder plot. Police said he was a drug dealer in the US who fled to the UK from Florida, where he is wanted by police over a plot to hire a hitman to kill a love rival. He is also suspected of hiring the same gunman to murder his former girlfriend, but the attempt on her life failed. During the 11-day trial he claimed the gunman who killed PC Broadhurst was a friend - dubbed "Mr X" by the prosecution. He refused to name the man, claiming he was a loyal friend and he could not "grass" on him or "stab him in the back. After the verdict, a statement issued by PC Broadhurst's family, including his wife Eilisa, said they will always be haunted by his murder. "Ian was a loving husband, a wonderful son, brother, uncle and friend," it said. "Not a second will pass when he is not in our thoughts. He lived for his job and he paid tragically with his life. "What happened is beyond belief and will haunt us forever. However, we feel that at last justice has been done. "Ian did not die in vain. He died doing the job he loved and serving the people of Leeds." Senior investigating officer, Detective Chief Superintendent Chris Gregg, said the investigation into the "enigma" that is David Bieber would continue. "We still don't know why he was in that area of Leeds with a loaded pistol - one bullet in the breach ready to fire - on that Boxing Day evening," he said. "He could have been about to do anything. Our investigations into this man are still far from over."