Lawrence friend Duwayne Brooks 'bugged by police'
25 June 2013 Last updated at 19:02 BST
The Met Police secretly recorded its officers' meetings with Stephen Lawrence's friend Duwayne Brooks and his lawyer, the BBC has learned.
Mr Brooks was with the 18-year-old on the night he was killed in a racist attack in 1993 in Eltham, south London.
Mr Brooks and his lawyer were unaware that the meetings were being recorded.
Scotland Yard said its directorate of professional standards was looking into the claim and treating it with "huge seriousness".
Matt Prodger reports.