Authorities in the border city of Tijuana deported a Pakistani man who is under investigation by U.S. authorities for alleged weapons trafficking, and U.S. police took him into custody Wednesday. A man identified as Pakistani citizen Arif Durrani, a former legal U.S. resident who was deported from the United States in the late 1990s, was sent by Mexico on a flight to his native Pakistan. But he was taken into U.S. custody during a layover in Los Angeles, said U.S. consulate spokeswoman Liza Davis. Another U.S. official speaking on customary condition of anonymity confirmed that Durrani was the target of an ongoing arms trafficking investigation. However, she and other officials refused to divulge specific details of the investigation, or confirm if Durrani was the man who was convicted in 1987 for selling missile parts to Iran, and who claimed he had been part of the Iran-Contra scandal.Mexican authorities had also said earlier the Pakistani was wanted in a weapons trafficking probe. He was detained earlier this week along with three Afghan-born men and a Syrian, all of whom apparently entered Tijuana from the United States. All five men were detained at a Tijuana hotel