A top Muslim Metropolitan policeman has called for a more rigorous analysis of intelligence, following a controversial anti-terror raid in east London.
Chf Supt Ali Dizaei said the police side of the story must be heard
Chief Superintendent Ali Dizaei said police needed to be "far more critical" as quality intelligence did not often come in a "single golden nugget".
He added he had not seen intelligence which led to the Forest Gate raid so could not make a "judgement call".
Police have apologised to the two brothers arrested during the raid.
Mohammed Abdulkahar, 23, and Abul Koyair, 20, were held on suspicion of terrorism in the 2 June raid on their home, which involved 250 officers.
Both men were later released without charge and have now spoken of the experience. Mr Abdulkahar, who was shot in the chest, said he had thought he was going to be killed by robbers targeting his home.
'Lessons to learn'
Chf Supt Dizaei said the police's version of events needed to be heard but he told BBC Radio 4 Today's programme: "Clearly there are lessons to be learned.
"Anyone who heard the young lads talk about their experience will be moved. But I think one has to err on the side of caution and wait and see what the investigation unfolds."
He said information often came through "low-level intelligence, community intelligence that you get from communities over a period of time".
"And I think it's that critical analysis of intelligence which is fundamentally important in the war against terror."
Chf Supt Dizaei said it would unacceptable if the two brothers had been treated in the way they had alleged at Tuesday's press conference.
The brothers said they feared for their lives during the raid
"That is not normal policy, the gung-ho attitude of entering houses, pushing people down the stairs and kicking people, that is not the practice of the police service and it is not the practice I am aware of," he said.
He added only one side of the story had so far been heard.
"You cannot make a judgment unless you hear the other side and I think we need to wait, be patient and hear what actually went wrong and then we can make judgment calls about culpability," he said.
Chf Supt Dizaei added that the Metropolitan Police Commissioner Sir Ian Blair retained the confidence of the force's officers.
Meanwhile, former home secretary David Blunkett has predicted there would be a "very severe" internal investigation by MI5 into the intelligence on which the raid was based.
Police have apologised for the "hurt" caused to the brothers, their family and residents of Newham.
Assistant Commissioner Andy Hayman, of the Met Police Specialist Operations, said police searched the two properties in Lansdowne Road but did not find the chemical device which "specific intelligence" had indicated was there.