A fourth person has been arrested following the murder of Malachi Brooks in March last year.
A 23-year-old man was arrested in the early hours of today (Saturday, January 27) on suspicion of arson and perverting the course of justice.
He has been taken to a south London police station where he remains in custody.
Two men have previously been charged with offences connected to Malachi’s murder.
Joel Preddie, 20, of Chantry Way, Mitcham was charged on Saturday, September 2 with arson.
Abdul Popatpotra, 26, of Totterdown Street, was charged on the same day with arson and perverting the course of justice.
They first appeared in custody at Wimbledon Magistrates' Court on Monday, September 4, and are due at Crown Court on February 26.
Malachi, 31, was fatally stabbed in Surrey Lane, Battersea, last March.
A post-mortem examination gave the cause of death as a stab wound to the heart.
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