Ahmet Paytak died at the scene of the Holloway shooting
A double shooting has left a 50-year-old man dead and his 21-year-old son injured in north London.
A pillion passenger got off a motorbike and ran into the Euro & Wine Food Store in Hornsey Road, Holloway, and shot the younger man in the leg on Sunday night.
When he returned to the motorbike he shot father-of-three Ahmet Paytak before fleeing the scene.
He died at the scene and his son was taken to hospital where condition was described as stable.
Mr Paytak and his son had been shot while closing up a convenience store, police said.
Mr Paytak worked part-time at the store, which was believed to be owned by his brother.
Detectives added they were keeping an open mind into the motives behind the shooting and confirmed they had not yet recovered the murder weapon or identified the motorbike involved.
Det Ch Insp Carl Mehta said that no arrests had as yet been made but officers were examining the scene, near to Arsenal's Emirates Stadium, for cartridges and gun casings.
He added that officers were searching through images taken from the shop's CCTV system.
Mr Mehta said it was too early in the investigation to speculate on whether Mr Paytak, his son, or both of them, were the intended targets in the shooting.
"I don't have a motive - obviously I'm keeping a very open mind as to why this has happened," the detective added.
Mr Mehta added that the style of the attack was "unusual".
He said: "We don't often hear about this sort of attack in London."
He also added that there was no evidence of any gangland link to the shooting at this stage.
Man shot dead in corner shop