Police are responding to reports of a van colliding with pedestrians outside a mosque in London, an incident that has resulted in "a number of casualties."
According to London's Metropolitan Police, one person has been arrested following the incident, which occurred around 12:15 a.m. local time Monday on Seven Sisters Road, near Finsbury Park station in the northern part of the city.
Police have sealed off adjacent streets, and said they were dealing with "a major incident."
London Ambulance Service said it has devoted "a number of resources" to the incident.
We have sent a number of resources to an incident in Seven Sisters Road. More information will follow when we have it.
The area was brimming with people as Muslim worshippers were departing from evening prayers, according to the BBC. The Muslim Council of Britain said its "prayers were with the victims."
Witnesses at the scene have described the incident as "horrible" and "hell."
Horrible to watch police officers doing cardiac massage at people on the floor, desperately trying to save them. I just hope they did. Tweet Embed:
All hell breaking loose in Finsbury park. pic.twitter.com/sYE9PBhsi6
Monday's incident marks the third deadly attack since March involving a vehicle running into pedestrians in London. In March, a lone motorist mowed down dozens of pedestrians on Westminster Bridge, killing five, before exiting his vehicle and fatally stabbing a police officer.
Earlier this month, several people were arrested for an attack in which a van drove into pedestrians on London Bridge before assailants exited the vehicle and began stabbing passersby at Borough Market. Eight people died in the attack.
This story is developing.