The Independent Police Complaints Commission calling for a change in the law to allow more transparency in cases where people are killed by police officers.
It comes after a coroner was told that it may never be possible to hold an inquest into the death of Mark Duggan whose shooting by police in north London triggered last summer's riots.
Lord Carlile QC, Liberal Democrat Peer, who from 2005 until 2011 was the independent reviewer of British anti-terrorist laws, told the Today programme's John Humphrys that he agreed that the law should be changed,
He said that so-called Section 17 is "important" and has "legitimate aims" but "it does prevent the truth being made public in some cases".
However he also pointed out that "it protects national security" so the law should be re-examined in order to re-balance it.
He said that more than ten years after this law was implemented "we have reached a point where more transparency is required albeit on a discretionary basis".
Lord Carlile suggested that an application should be made to an experienced senior judge so that an assessment can be made on whether revealing details is in the public interest.
He gave the example of a human covert intelligence operation being at risk as being a good proportional reason to keep it secret.
But said that "it is time to review the laws".
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