The killer of headmaster Philip Lawrence has been let out of jail for a day to prepare for his release.
Chindamo was 16 when he murdered Philip Lawrence
Learco Chindamo was 16 when he stabbed Mr Lawrence to death as he tried to protect a pupil outside his school in Maida Vale, north-west London, in 1995.
Chindamo, now 25, was given a life sentence in 1996 and told he would have to serve at least 12 years in prison.
The Prison Service said he had been let out of prison on Saturday as part of a resettlement programme.
Day releases are used to maintain and develop prisoners' contact with their families and friends, and prepare them for their eventual release.
A spokesman said: "They are allowed following stringent risk assessment. For life sentence prisoners this risk assessment is particularly important, and looks at all public protection issues associated with the release."
As part of his release conditions Chindamo was told he could not contact any members of the Lawrence family, drink alcohol, take drugs or gamble.
Chindamo had led a gang of youths to St George's Roman Catholic school in December 1995 to attack a boy who had quarrelled with a pupil.
He slapped, punched and stabbed Mr Lawrence outside the gates as he tried to defend the pupil.
The pupil, William Njoh, was jailed in 2003 for carrying a gun at the Notting Hill Carnival. The court heard his life had been blighted by the attack and having to give evidence in the murder trial.