A fourth suspect has been taken into custody today following an incident in Poplar on Friday evening where a man was found fatally stabbed in the back.
All four of the suspects were arrested on suspicion of murder. The victim was named earlier as Liam Hamilton.
More top news
Australian paramedics are being recruited to fill vacancies at the London Ambulance Service.
Brent Council is offering to cut business rates for firms that pay the London Living Wage.
A man standing trial accused of murdering two pensioners has been found hanging in his prison cell, police say.