The Clonee Islamic Centre and a group called Minhaj Youth said they totally condemned yesterday’s attacks, saying they were the acts of "evil, sick, pathetic cowards".
Those who were responsible did not represent Irish muslims or the majority of muslims throughout the world, the groups said.
Sheikh Allama Zille Umar Qadri, director of the Clonee Islamic Centre
"This was a terrorist attack aimed at ordinary working class Londoners, black and white, Muslim and Christian, Hindu and Jew, young and old. Our sympathies and our prayers are with the victims, their families and friends," said Sheikh Allama Zille Umar Qadri, director of the Clonee Islamic Centre.
"Just like the rest of the Irish Muslims we on behalf of Clonee Islamic Centre and Minhaj Youth are sad, shocked and angry about these terrorist attacks. If the perpetrators are indeed Muslims or represent an Islamic organisation then they certainly do not represent the Irish Muslims as well as the overwhelming majority of the Muslims across the world.
"This act of terrorism is totally and utterly against the basic teachings of Islam. The religion of Islam promotes peace and teaches against violence and murder."
"Islam is a peaceful faith and has nothing to do with terrorism. Muslims who are terrorists have nothing to do with Islam."