MONTREAL - The Montreal police arson squad is investigating a fire that broke out early Sunday morning in a pizzeria in Montreal North.

It's the third pizzeria in the borough to be targeted in a week; two other pizzerias in Montreal North were hit by Molotov cocktails early Wednesday morning.

Sunday's fire, described as suspicious, damaged the Granada Pizzeria restaurant on Charleroi St. near Drapeau Ave., and four apartments upstairs were evacuated.

None of the 10 tenants inside the residences was injured.

Witnesses said they heard a loud noise before the fire broke out.

With files from La Presse Canadienne