Birmingham, England ? Ten days after Islamic radicals carried out deadly attacks on the London transport system, Britain’s largest Sunni Muslim group on Sunday issued a binding religious edict, a fatwa, condemning the July 7 suicide bombings as the work of a “perverted ideology.”

The Sunni Council denounced the bombings as anti-Islamic and said the Quran, the Muslim holy book, forbade suicide attacks.

“Who has given anyone the right to kill others? It is a sin.” said Mufti Muhammad Gul Rehman Qadri, the council chairman. “What happened in London can be seen as a sacrilege. It is a sin to take your life or the life of others.”

The council said Muslims should not use “atrocities being committed in Palestine and Iraq” to justify attacks such as those in London that killed 55 when suicide bombers struck in three Underground trains and a double-decker bus, the fatwa declared.

“We equally condemn those who may have been behind the masterminding of these acts, those who incited these youths in order to further their own perverted ideology,” Qadri said.

Also Saturday, government officials dismissed claims that lax attitudes allowed homegrown suicide bombers to develop. The Sunday Times reported that one suspected bomber, 30-year-old Mohammad Sidique Khan, was investigated last year by MI5, Britain’s domestic intelligence service, but was not regarded as a threat to national security or subsequently put under surveillance.

MI5 began evaluating Khan, a Briton of Pakistani ancestry, during an inquiry that focused on an alleged plot to explode a large truck bomb outside a target in London thought to be a nightclub in Soho, the newspaper said. The private inquiry reportedly evaluated hundreds of potential suspects.

The Metropolitan Police and a spokesman for Prime Minister Tony Blair declined comment.