Firefighters are investigating the cause of a fire at Mcivor Court on the city's South side. Crews from four fire stations responded to the call just after 10 o'clock Sunday morning. Platoon Chief Kim Hutch says it might have been caused by smoking material being thrown down the garbage shoot. Firefighters had to force entry where the fire was quickly put under control. There have been no injuries reported, and damage to the apartment is minimal.