London's top counterterrorism police officer has been removed from his post after he was implicated in a report that concluded the force spied on the family of a murdered teenager — a case that exposed police racism and incompetence.

The Metropolitan Police said Friday that Cmdr. Richard Walton had been transferred following publication of a report on the killing of Stephen Lawrence, who was fatally stabbed in a racist attack in 1993.

No one was convicted of the murder for almost 20 years.

The report found that an undercover policeman spied on Lawrence's relatives during a public inquiry into the force's botched handing of the case.

Walton was one of the police officers making submissions to the inquiry, and met with the undercover officer while it was underway.