WATCH: Shocking footage of the alleged driver in the Brampton collision has emerged

Brampton Mayor Patrick Brown has taken to social media to blame a reckless driver with a suspended licence for a crash that killed a mother and her three daughters.

The Dufferin-Peel Catholic District School Board said Karolina Ciasullo, 37, was a Grade 4 teacher at St. Isaac Jogues Catholic Elementary School in Brampton. Her children were Klara, 6, Liliana, 4, and Mila, 1.

Brown shared a video to Twitter that allegedly shows the driver lurching through an intersection as onlookers try to intervene. He appears to be unresponsive.

The video was filmed at least two days before the fatal crash, and features a blue Infiniti coupe mounting a sidewalk while a pedestrian attempts to open the vehicle’s door in order to pull the driver out.

"Community members & police tried to stop the driver. He was having none of it," Brown wrote on Twitter. "He belongs behind bars for taking 4 innocent lives."

-With files from CBC