Fire crews getting a call just after 12:30 this morning about a porch being on fire at 16 Queen Square North.
When they arrived on scene, crews discovered the vestibules of two homes were ablaze. The flames were extinguished in a manner of minutes but the cause of the fire is suspicious and city police are investigating.
Smoke was also discovered coming from a building at 261 Charlotte Street a few minutes later.
On Saturday night crews responded to a suspicious blaze near Lancaster Mall where a dumpster and a quarter ton truck were found on fire.