Update 2:15 p.m. KQED's Mina Kim was at the press conference at the airport and reports the following:
Airport spokesman Mike McCarron said suspicious items were detected at 11:17 a.m. by airport security. The SFPD bomb squad was called, and the security checkpoint, which serves Delta Airlines, was closed.
The bomb squad determined that the suspicious items were oxygen cylinders and a generator. The suitcase owner, an elderly woman in a wheelchair, was interviewed by police. She said that she was not aware of the items because did not pack them herself, a fact that had prompted the bomb squad to be called in.
Eight to ten flights were disrupted, serving 1,200 Delta passengers.
Angry Delta passenger Scott Kauffman said Delta did not hold flights or let passengers rebook on other airlines. He said his original flight was at noon, and now he won't be leaving until 10:30 p.m.
Update 1:35 p.m. A suspicious package shut down a boarding area in Terminal 1 at SFO today, but apparently the bomb squad found nothing dangerous...
https://twitter.com/#!/flySFO/status/173156268444352512
https://twitter.com/#!/flySFO/status/173156511449755648