TREMONT - Firefighters are investigating a massive fire that severely damaged four businesses on East Burnside Avenue Sunday morning.

The fire sparked inside Fino's Menswear and Shoes and the flames and smoke were so intense, a section of the building's roof collapsed. The fire quickly spread to a discount shop, a cellphone store and La Marketa Meats.

Jose Pastel, who owns the meat shop, called it "disappointing" to have to rebuild his store over again.

Residents in the area say they're upset over the loss of four businesses in the neighborhood's busy shopping area. They're also worried about the employees who worked at the stores.

Three firefighters were injured battling the fire.