Former head of the Metropolitan Police Lord Stevens is to be investigated over claims he did not pass documents to the Stephen Lawrence inquiry.
The Independent Police Complaints Commission (IPCC) announced the investigation after a referral from Scotland Yard.
Documents at the centre of the investigation relate to intelligence about alleged corruption by officers involved in the Lawrence case.
Stephen’s parents Doreen and Neville Lawrence have always maintained that police corruption played a role in the bungled investigation into their son’s racist murder.
Mark Ellison QC carried out a review into claims of corruption by cops last year. It said former detective John Davidson was suspected of corruption in the Lawrence case—in which he had a key role.
Davidson has always denied the claims.
Neville Lawrence had complained that the Met did not refer the “destruction of anti-corruption intelligence” to the IPCC.