Justice Department officials said two unidentified white men, who remain at large, may be responsible for the Oklahoma City car bombing. At an afternoon new conference, Attorney General Janet Reno announced the U.S. would offer $2 million for information leading to the arrest or conviction of a pair of "John Does" linked to a vehicle thought to contain the massive bomb that tore apart the Alfred P. Murrah federal building. The FBI said the link to the two men was established by identifying a Ryder rental truck as the vehicle used in the bombing. It was rented in Junction City, Kan. The Bureau has issued sketches of the suspects: one is between 5'10" and 5'11' feet tall, weights 180 to 185 pounds, and has light brown hair with a crew cut; the other is 5'9" to 5'10" tall, weight 175 to 180 pounds, has brown hair and has a tattoo on his left arm. At a Washington briefing, Reno refused to comment on whether the development diminished the possibility that Islamic groups were involved. Though FBI officials said they knew of no other arrests in connection with the bombing, CNN said three men of Middle Eastern extraction were being questioned about the bombing. In New York, a law enforcement source told The Associated Press that one of the three men identified by CNN, Asad Siddiqy of New York City, is a cab driver in the New York borough of Queens.