Abdul Rahman. 33, says he resigned under pressure after Scotland Yard was warned by intelligence agents that he may have been a terrorist "sleeper" trained at a Pakistani training camp in 2001.
Rahman, who has adamantly denied the allegation, is the first British constable ever named publicly as having failed a counter-terrorism check by Britain's MI5, The Daily Telegraph said Sunday.
Rahman is seeking compensation for losing his badge after three years on the job. His lawyer pointed out that he had never been arrested or even questioned in connection with a terrorism investigation.
Rahman, who is married and has four kids, is a native of Bangladesh but was raised in England. He conceded he had visited Pakistan in 2001.
The Daily Telegraph said Rahman's father, who lives in London, said his son was a solid Muslim who prayed daily, which he suspected made his fellow officers uneasy. "I think he didn't fit into the police because of that," the man said.