A suspected double bomber on the FBI's most wanted list who vanished for 21 years is due in court this week to decide if he will be sent back to the United States to face trial. The FBI believes Daniel Andreas San Diego has links to animal rights extremist groups and is their prime suspect for a series of bombings in the San Francisco Bay Area in 2003. Former FBI agents have said there were 'missed opportunities' to arrest the 47-year-old before he vanished and claim they found a suspected 'bomb-making factory' in his abandoned car after what detectives called a 65-mile (104km) rush-hour chase in California.

Mr. San Diego was found 5,000 miles (8,000km) away in a cottage in north Wales last year. He faces a five-day extradition hearing at Westminster Magistrates Court in London on Monday to determine whether the UK will hand him over to the United States to answer a federal arrest warrant.

The former fugitive, the first born-and-raised American on the FBI's most wanted terrorist list, has been indicted by US prosecutors for maliciously damaging and destroying by means of an explosive after two separate attacks in 2003. Animal rights extremist group Revolutionary Cells - Animal Liberation Brigade claimed responsibility for the attacks on firms they believed had links with organizations that tested products on animals.

The FBI felt it had enough intelligence to suggest Mr. San Diego was its prime suspect and thought it was him that planted the devices that detonated a month apart. Two bombs exploded at a biotechnology corporation in Emeryville, near Oakland, USA, on 28 August 2003, with investigators believing the second bomb was planted to target first responders.

The day before Mr. San Diego went off the FBI's radar, Mr. Smith was hiding in camouflage outside his home. However, hours later, Mr. San Diego made a run for it with detectives in pursuit. The FBI tracked him for years after his disappearance, but after 21 years of silence, they learned he had been captured in Wales. His arrest raises critical questions about law enforcement's handling of domestic terrorism cases and the challenges of tracking individuals across borders.