03/29/2013 02:01 EDT | Updated 05/29/2013 05:12 EDT

Suspicious apartment fire south of Montreal leaves 30 people homeless

LONGUEUIL, Que. - Thirty people are homeless after a suspicious fire at an apartment complex south of Montreal.

Michel Huguenot, fire chief for the City of Longueuil, says traces of accelerants were found at the site of the blaze.

Some 70 firefighters were used to put out the flames, which broke out at around 6:30 a.m. on Friday while many residents were still inside.

Three people suffered minor injuries in the fire, including one firefighter.

The investigation has been handed over to police.

A local chapter of the Red Cross is helping families who lost their homes.