Envelopes with white powder determined to be hoaxes, officials said By Dave Birkland Seattle Times staff reporter Envelopes containing white powder, some containing anti-war messages, were found at six locations in West Seattle this morning, and all were quickly determined to be hoaxes, officials said. At mid-morning, no one had taken responsibility, nor were there any suspects, according to Seattle police, whose bomb squad responded to the sites. All six appeared to be linked. The white powder on each was determined to be wheat flour, according to Helen Fitzpatrick. It started about 7 a.m., when an employee at the West...