A 16-year-old boy is among three people who have been arrested over the death of a Czech man after an argument in a chicken shop.
Zdenek Makar, 31, was pronounced dead in the street near All Saints DLR in Poplar late on Wednesday, police said.
Two men, aged 19 and 29, and the teenager have been arrested on suspicion of murder and taken in for questioning.
Police believe that Mr Makar was involved in a row with a group of men inside Perfect Fried Chicken in East India Dock Road, before being followed and attacked.
A Metropolitan Police spokesman said: "Detectives continue to appeal for anyone who was in the area who witnessed the events prior to attack or the incident itself. They retain an open mind as to the motive for the attack."
A post-mortem examination on Friday revealed that Mr Makar died from head injuries.
His next of kin has been informed.