A man is in hospital after a knife attack in a London high street bank.
The man aged in his 50s and believed to be Jewish, was found suffering from stab wounds on Stoke Newington High Street, Hackney, at about 11:00 BST.
Members of the public restrained the suspected attacker who was also taken to hospital with minor head injuries.
The suspect, in his 40s, has been arrested on suspicion of attempted murder. Police are investigating whether the attack was a hate crime.
Construction site manager Lazar Friedlander and his brother Matt restrained the suspected attacker after hearing a "serious scream".
Mr Friedlander said: "We ran outside, I saw a Jewish man covered in blood.
"I'm Jewish myself, and I can see another Jewish man shouting 'hold him, catch him, he's got a knife! Stabbing!'
"There were a couple of other people trying to grab him.
"Me and my brother managed to force him down and put his hands behind his back until the police came."
Appealing for more witnesses, the Met Police said the victim had been attacked "in a bank in Stoke Newington High Street" but did not say which bank.
The victim's injuries are not life-changing or life-threatening.
Det Sgt James Tipple said he had "suffered multiple stab wounds in what was a horrific incident" which would "undoubtedly stay with him for a long time to come".