A man has been stabbed in the neck at a mosque in central London today during a call to prayer.
Witnesses of the incident at Regent's Park Mosque said they saw the Mu'azzin, a person who leads and recites the call to prayer, being knifed shortly after 3pm today.
Officers from the Met Police have arrested a man on suspicion of attempted murder.
A clip of the scene shows a male in a red jumper being held down on a blue floors of the place of worship in the west of London.
Footage shows the man being marched out of the mosque by several cops while worshippers watch on.
In one video the suspect can be seen on the floor with no shoes on.
His feet do not appear to dirty despite the rainy weather outside, suggesting he removed his shoes inside the buildings as those praying in Mosques typically do.
It's believed the man stabbed is in his 70s and has been taken to hospital. It's not known his condition at this stage.
A small knife can be seen not far from his feet underneath a chair.
Twitter user @MurshHabib uploaded a video from the scene and tweeted: One man who uploaded videos from the scene tweeted: "This is absolutely terrible.
"No Muslim is safe in their places of worship!!"
A spokesperson for the police told the Mirror said: " Police were called to a mosque in Park Road, NW8, at 15.10hrs on Thursday, 20 February, to reports of a stabbing.
"Officers attended along with paramedics from the London Ambulance Service (LAS).
"A man was found with stab injuries.
"He was treated by paramedics before being taken to hospital. We await an update on his condition.
"A man was arrested at the scene on suspicion of attempted murder.
"A crime scene has been put in place. Enquiries continue."
