Animal rights extremist wanted for U.S. bombings caught in Wales after more than 20 years on the run

An animal rights extremist believed to be behind a pair of bombings in Northern California over two decades ago was caught in Wales on Monday, authorities said.

FBI Director Christopher Wray celebrated the capture of Daniel Andreas San Diego, 46, saying on Tuesday that the suspect will finally be held "accountable" for his alleged acts of "violence and destruction."

“Daniel San Diego’s arrest after more than 20 years as a fugitive for two bombings in the San Francisco area shows that no matter how long it takes, the FBI will find you and hold you accountable,” Wray said in a statement.

San Diego has been linked to two homemade pipe bombs that went off on Aug. 28, 2003, at Chiron Corp., a biotech company in Emeryville, just across the bay from San Francisco.

He's also accused of sending a "bomb strapped with nails" that went off at a nutritional company, Shaklee Corp., in nearby Pleasanton, on Sept. 26, 2003.

The FBI believed that San Diego, who was born in Berkeley, bombed the firms because they had worked with another lab that had conducted animals experiments.

“There’s a right way and a wrong way to express your views in our country, and turning to violence and destruction of property is not the right way," Wray added.

This is a developing story. Please check back for updates.

This article was originally published on NBCNews.com