A vehicle struck pedestrians near a mosque in north London early Monday morning, causing several casualties, according to Associated Press.

The attack comes during the Muslim holy month of Ramadan, when people attend prayers at night.

One person has been arrested but police have not said if the crash was deliberate or accidental.

The London Ambulance Service says the injured are being taken to hospitals. Eyewitnesses reported seeing police give emergency medical treatment to at least one of the injured.

London police have declared the crash a major incident and closed the area to normal traffic. A helicopter circled above the area as a large cordon was established to keep motorists and pedestrians away.

Following the incident, Prime Minister Theresa May said her thoughts were with those injured in "this terrible incident". The leader of the opposition Labour Party, Jeremy Corbyn, said he was "totally shocked".