An investigation has been launched over the conduct of one serving and two former Met Police officers in relation to the Stephen Lawrence case.
The Independent Police Complaints Commission will investigate allegations of discreditable conduct and breaches of honesty and integrity by Commander Richard Walton.
He is accused of meeting with an undercover officer in 1998 and obtaining information about the family of Lawrence and their supporters "potentially undermining the inquiry (into Stephen's murder) and public confidence", the commission has announced.
They will also investigate allegations of discreditable conduct on the part of two former Met officers - then Detective Inspector Robert Lambert and Commander Colin Black.
The IPCC started the probe after the Stephen Lawrence Independent Review undertaken by Mark Ellison QC.