04/28/2015 08:12 EDT | Updated 08/01/2015 01:59 EDT

Tar spills from overturned truck at Notre Dame and De Lorimier intersection

Firefighters are cleaning up a tar spill this morning after a truck carrying tar flipped on its side at the corner of Notre Dame Street East and De Lorimier Avenue. 

The incident happened at 6:30 a.m., backing up commuter traffic on the 720 Expressway.

The intersection is closed at the corner of Notre Dame Street East and De Lorimier Avenue.

Montreal police said they don't know how long it will take to clean up the mess.