This is the moment Toronto FC fans launched a flare at a football match that caused their own banner to erupt in flames.

Footage captured on July 18 during the Canadian Soccer Championship semi-final tie with Ottowa Fury FC shows the Toronto fans lighting flares and throwing them on the pitch at the 71st minute.

After a security guard retrieves the flare from the pitch, there is a small explosion – reportedly from a concussion grenade.

The fans also appear to have set their own banners on fire.

"The soccer players on the pitch keep playing the entire time," the filmer adds.

Toronto FC played Ottawa Fury FC in the Canadian Soccer Championship semi-final game on July 18, 2018. A group of Toronto FC supporters (hooligans) made the trip up to Ottawa. In the 71st minute of the game, a hooligan threw a flare onto the pitch. A fire was set in the stands, burning their banners and flags. A security guard runs onto the pitch to retrieve the burning flare, and shortly after an explosion from a suspected concussion grenade goes off. The soccer players on the pitch keep playing the entire time.