A new week, a new terrorist attack.

This seems to be the case with the hitherto peaceful city of London.

At least one person has been pronounced dead and 10 others injured when a van drove into a group of worshipers outside a London mosque on Monday.

This is the third attack in as many months as London is now obviously under siege by terrorists.

It is understood that the driver of the van, aged 48, was detained by members of the public at the scene and then arrested by police in connection with the incident, authorities said

In a swift reaction, the Prime Minister Theresa May called it a "potential terrorist attack" and said: "All my thoughts are with those who have been injured, their loved ones and the emergency services on the scene.”

On their part, The Metropolitan Police called it "major incident" and said an investigation was being carried out by the Counter Terrorism Command.

A man identified as Jermain Jackman told the BBC the sidewalks were "packed with people walking home" when the incident occurred.

"It was a van that mounted the pavement as men and women were leaving the mosque to go home to their families and friends and their loved ones," Jackson said.

"During the night, ordinary British citizens were set upon while they were going about their lives, completing their night worship," the Muslim Council said in a statement, adding that "Muslims have endured many incidents of Islamophobia," over the past weeks and months.

"We urge calm as the investigation establishes the full facts, and in these last days of Ramadan, pray for those affected and for justice," the statement concluded.

Eyewitnesses said there were a total of three "attackers," one of whom was apprehended while two more fled the scene.