He said police were keeping an open mind about the motive. Setchell said the devices were contained in padded 6" x 8" envelopes and designed to activate when the contents were removed.

The man was arrested Thursday after he attempted to appear on a radio call-in show, said Assistant Chief Constable Anton Setchell, the national police coordinator for domestic extremism.

The man was arrested Thursday after he attempted to appear on a radio call-in show, said Assistant Chief Constable Anton Setchell, the national police coordinator for domestic extremism.

The man was arrested near Cambridge, 55 miles northeast of London, said Anton Setchell, the Association of Chief Police officers' national coordinator for domestic extremism.

Anton Setchell, the police's national co-ordinator for domestic extremism, said the man apparently wanted to go on air to claim responsibility and explain his reasons for doing it.

Anton Setchell, the Coordinator for Domestic Extremism of Britain’s Association of Chief Police Officers, said police had received no claims of responsibility for the series of seven bombs over ...

British groups focus of letter-bomb probeA group called Motorists Against Detection claims to have done $40 million worth of damage by destroying 1,000 cameras since 2000. The group’s fugitive ...