WASHINGTON - US officials announced Monday the arrest of a man who sought to detonate a bomb in Oklahoma City reminiscent of the deadly 1995 bombing by anti-government extremist Timothy McVeigh in the same city. Jerry Varnell, 23, was arrested Saturday after attempting to trigger what he thought was an ammonium nitrate fertilizer bomb - like McVeigh's - outside a BancFirst branch in the center of the city, according to a criminal complaint filed in Oklahoma district court. Varnell told an undercover FBI agent and a cooperating source he wanted to attack the government, with his initial target the Federal Reserve in Washington, eight blocks from the White House.