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
Londoners who have received new electronic gadgets for Christmas are being advised to take simple steps to protect them from thieves.
The Boxing Day sales got off to a flying start with shops reporting a surge in business during the first hour of trading.
Bus strikes are planned for Monday 29 December and Monday 5 January.