Two youths arrested over the shooting of two teenagers at a McDonald's restaurant have been released.
The shooting happened inside McDonald's
One has been bailed to return later in October and the other has been released without charge.
A gunman opened fire in the fast-food restaurant in Brixton, south London, on 28 September that was packed with families at the time.
Both victims, aged 17, were shot at close range, one in the chest and the other in the arm.
Police said there was no evidence to suggest the shooting was gang-related.
The victim who was shot in the arm received treatment in hospital and discharged, while the boy shot in the chest is still in a stable condition in hospital, Scotland Yard said.
Officers from the Metropolitan Police's gun crime unit Trident are investigating the case.
The shooting took place at about 1725 BST in the restaurant at the junction of Brixton Road and Coldharbour Lane.
Families and schoolchildren were in the restaurant at the time.
A Scotland Yard spokeswoman said: "We now know prior to the shooting the victims were involved in a brief verbal argument with some other people in the restaurant and then three to four minutes later the shooting occurred.
"It is also thought that the victims and the gunman may have known each other, but it is not certain."
The gunman is believed to have escaped on a bicycle along Brixton Hill.