you're watching bbc news. the metropolitan police has apologised to baroness doreen lawrence after breaking a promise to answer questions raised by a bbc investigation into the murder of her son stephen. the 18—year—old was stabbed to death in a racist attack by a group of young white men 31 years ago today in south london. two of the original five suspects were convicted of murder in 2012, but the met�*s disastrous handling of the case means no—one else has been brought to justice. in an exclusive bbc interview, baroness lawrence says the murder investigation should now be reopened. daniel de simone reports. the racist murder of stephen lawrence took place 31 years ago today at a south london bus stop. two of the original five prime suspects were convicted almost 20 years after the murder. but the met�*s disastrous handling of the case means no one else has been brought to justice.