An American Airlines DC-10 carrying 276 passengers from Dallas to San Francisco was diverted to Stockton Airport after a crew member found a handwritten bomb threat, an airline spokesman said. The pilot diverted Flight 295 to Stockton and landed about 1 p.m., and the FBI detained passengers for questioning and began searching the aircraft, said Tom Schwartz, a spokesman for American Airlines. No bomb was found by 5 p.m. and there were no immediate suspects, FBI special agent Tom Griffin said in Sacramento. The flight left Dallas-Fort Worth International Airport and was scheduled to arrive at San Francisco International Airport at 12:43 p.m. The bomb threat was found in one of the bathrooms, Schwartz said. The passengers and the 13 crew members were evacuated through emergency exits, Griffin said. The investigation is being assisted by the San Joaquin County Sheriff's Department. Passengers were scheduled to be bused to San Francisco, about a 90-minute trip, later in the evening, airline spokesman Al Becker said.