Violence flares in Montreal after concert cancelled

A cancelled punk rock concert sparked an outburst of violence along Montreal Rue St-Denis on Tuesday night

More than 100 police officers were needed to break up a riot in downtown Montreal after a punk rock concert was cancelled on Tuesday night.

Three officers and two security guards were injured, seven rioters were arrested, and 42 cars damaged as angry fans rampaged through the streets.

Fire trucks were called out after several cars were overturned and set on fire. Fans smashed store windows and started looting.

The riot broke out at about 8 p.m. at the doors of the Medley Bar when fans were told the concert was cancelled.

The concert was called off after Canada Customs refused to allow some members of the bands "Total Chaos" and "The Exploited" into the country.

About 1,000 people were waiting outside the bar for the concert.