LONDON — An alleged animal-rights extremist on the US most-wanted terrorist list since 2009 in connection with the bombing of a California biotechnology firm has been arrested in the United Kingdom, the FBI said on Nov 26. 

The suspect, Daniel Andreas San Diego, was arrested in Wales on Nov 25 in an operation carried out by Britain's National Crime Agency, Counter Terrorism Policing and the North Wales Police in coordination with the FBI, the FBI said in a statement.

It was not immediately clear if San Diego, who is now in detention pending extradition, has legal representation. 

San Diego was charged in connection with a bomb blast at biotechnology firm Chiron Inc near Oakland, California, in August 2003. A second bomb found there was deactivated by authorities and possibly intended to target first responders. Authorities accuse San Diego of planting a third bomb at another California company a month later. 

No one was injured in any of the incidents, the FBI said. 

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