A 20-year-old London man was arrested a short time later without incident in the area of Oxford Street West and Cherryhill Boulevard. He did not know the victims, but there is evidence it was a premeditated attack, according to authorities.
The collision happened on Sunday evening at approximately 8:40 p.m. on Hyde Park Road between Gainsborough and Sarnia.
A 20-year-old city man was arrested in the parking lot of a mall seven kilometres away.
Minutes later, she said, she came upon a gruesome, chaotic scene at an intersection near her home, with first responders running to help, a police officer performing chest compressions on one person and three other people lying on the ground.
"He was a family guy, very much involved in the community, a regular member of our mosque, a really, really great father", the neighbor, who was not identified, said of Syed Afzaal.
Police have not yet released the victims' names, but the London Free Press said that among the dead were Syed Afzaal, 46, his wife, Madiha Salman, 44, and their 15-year-old daughter, Yumnah Afzaal.
He appeared in a London court on Monday in relation to the charges.
They said a woman was pronounced dead at the scene.
"These were innocent human beings who were killed simply because they were Muslim", said community spokesperson Nawaz Tahir.
The attack was the worst against Canadian Muslims since 27-year-old Alexandre Bissonnette gunned down six members of a Quebec City mosque in 2017.
"The National Council of Canadian Muslims (NCCM) is beyond horrified and demands justice after the horrific vehicle attack on a Muslim family in London, Ontario who were out for a walk on Sunday evening".
London Mayor Ed Holder also spoke at the virtual news conference Monday. Police said a black pick up truck mounted a curve and struck the victims at an intersection.
"I was shaken up, thinking it was an erratic driver", Martin said.
Martin said there were a few dozen people on the sidewalk, and several drivers got out of their cars to help. "My heart is so broken for them today".
"I grieve for the family, three generations of whom are now deceased".
The National Council of Canadian Muslims said in a statement it was "beyond horrified and demands justice" for the family who were just "out for a walk" on a warm spring evening.
"They were just out for their walk that they would go out for every day", Khan said through tears near the site of the crash.