British mystified by group linked with letter bombs

December 2, 1982

Scotland Yard said a mysterious group - the Animal Rights Militia - claimed responsibility for five letter bombs sent to top British politicians, including one that exploded at Prime Minister Margaret Thatcher's official residence.

The attacks were deplored by recognized animal-care groups, including the Royal Society for the Prevention of Cruelty to Animals and the British Union for the Abolition of Vivisection.