THE Secretary-General of the Muslim Council of Britain said he wanted to take "concrete steps" to ensure an atrocity like the London bombings never happened again.
Sir Iqbal Sacranie told a meeting of Islamic and community group leaders in Leeds: "We are all responsible for it in a way, because we have been talking about the fact there are elements within the community who perhaps are carrying out the rhetoric and message of hate and very little has been done.
"The community across the country condemns such activities, but beyond that what have we been doing?"
Asked if he supported the call for a public inquiry on how the bombings happened, he said it was too early to say.
The police should be left to get on with their investigations at this time, he said.
Outside the Leeds Grand Mosque in Hyde Park, Sir Iqbal said everyone from all walks of life should contact the police if they had information on any crime.
He said: "Where there is a case of criminality, where there's a clear concern that a crime is about to take place, if there's any knowledge that we have, it's the responsibility of every citizen irrespective of whether they're Muslim, Christian, Jew, or whatever, to come forward.
"Now it has come to light there is this element in the community we have the extra bit of responsibility.
"But it has to be shared with others and all of us have to fight this extremely heinous crime that we are facing."
He said imams needed to address all the issues affecting their community, from issues of youth and education to unemployment and foreign policy.
He said the Muslim community was willing to engage with everyone - people of faith, people of no faith, the police and the governing authorities.
But it had to be a two-way process.
He said: "There's a concern that some of the Muslim communities are doing their best to deal with issues on the ground - but there isn't the support coming through.
"In areas where the raids were carried out like Beeston, there isn't any communication with the community leaders."