The head of the Metropolitan Police said it is vital police take action on the allegations resulting from the Ellison report into Stephen Lawrence's murder investigation.
The report concluded that a "police spy" had been working within the Lawrence family camp and that one of the officers in the original murder investigation may have acted corruptly.
Sir Bernard Hogan-Howe said: "This sort of allegation shocks me, it shocks my colleagues and it clearly shocked the public so it is vital that we take it seriously and do something about it."
A senior Met Police officer has been moved from his role following the publication of a report into Stephen Lawrence's murder investigation.
Almost 21 years after Stephen Lawrence was stabbed to death, the Home Secretary has ordered a public inquiry into undercover policing .