This link is the best one with time line, what happened and who the suspects are and why:
http://www.ktvu.com/news/2439703/detail.html Explosions Rock Emeryville Bio-Tech Firm
POSTED: 6:50 a.m. PDT August 28, 2003
UPDATED: 8:13 a.m. PDT August 28, 2003
EMERYVILLE, Calif. -- Two early morning explosions Thursday on the campus of Emeryville's Chiron Corporation may have been the work of animal rights activists, a company spokesman told KTVU's Mornings On 2.
Martin Forrest, a company spokesman, said no one had been injured in the two blasts -- the first around 3 a.m. and another an hour later. A third blast around 7 a.m. was the work of authorities who detonated a suspicious package. Company officials say damage was 'minimal' to the facility which is a worldwide leader in bio-tech research in developing new treatments for cancer and other deadly illnesses.
However, Forrest did say the plant does do animal testing and has received threats through the mail.
"We believe this is the activity of animal rights activists and was meant to harass and affect the good work we are doing here," he said. "We're not certain of anything right now...Where the bombs were located, it looks like they were external to the company."
Emeryville police had blocked off surrounding streets and a search of the campus by the Alameda County Bomb Squad was underway for other devices.
"We are asking our employees not to come to work until 1 p.m. today," Forrest said. "We want to make sure these two explosions were the end of this activity."
Violent animal rights activity has picked up in the state in the last few months. Last week, an arson fire at a Los Angeles dealership destroyed or damaged dozens of Hummers and other SUVs.
The ELF -- a leading animal rights group -- has claimed responsibility for a slew of arson attacks against commercial entities that members say threaten or damage the environment. It is suspected in a $50 million arson Aug. 1 fire that destroyed a five-story housing complex under construction in San Diego's fast-growing northern edge.