A manhunt is under way after a man was stabbed to death in central London.
The victim was found with stab wounds in Cunningham Place, near Regent’s Park, at 18:15 GMT and died in hospital.
Scotland Yard said the attack was linked to a raid of the nearby London Central Mosque, which has been sealed off by armed officers.
A spokeswoman confirmed the stabbing was not terror-related, and officers continued to hunt the attacker.
Bahir Moulana told the Press Association that as he was walking towards the mosque the police were pushing people back before they closed the main gate.
With a number of armed officers at the scene, the 39-year-old said it gave him the “jitters”, especially following the recent attack at two mosques in New Zealand.
“I saw all the blue lights and my heart was in my mouth,” Mr Moulana said.
With worshippers eventually let out of the building, he added: “There was one girl who said she saw two guys run in. Someone else told me the police were chasing them.”
Mr Moulana said he saw two people being detained and put in handcuffs by the police at the mosque.
“The police just surrounded them. I saw that at around 7pm,” he added.
Footage released on social media shows armed police standing guard outside the mosque on Park Road, about half a mile from where the man was found stabbed.
The Met tweeted: “Officers continue to deal with a stabbing at Cunningham Place/Park Road, Westminster.
“We can confirm that this incident is not terror-related. Searches for suspects are ongoing.”
Westminster North MP Karen Buck said she was “deeply saddened to hear this awful news”.
Knife crime victims in 2019
Motives and circumstances behind killings have varied – as have the age and gender of the victims.