SAGINAW TOWNSHIP, MI —

Authorities are investigating a partial roof collapse at a Kmart store on Gratiot in Saginaw Township. No injuries were reported.

Saginaw Township Police Department officers were called before 4 a.m. Monday, Jan. 6, for a sprinkler alarm at the building located at 5105 Gratiot. The officers found a section of roof collapsed, Sgt. Rick Herren said.

"The roof collapsed on the back side of the building. It looks pretty significant," Herren said.

Fire crews found a section of roof, about 100 feet by 100 feet, in the middle of the store toward the back, had collapsed, Saginaw Township Fire Chief Jim Peterson said.

An employee of the store was inside near the front of the building when the collapse happened heard the noise but was not injured, Peterson said.

Police stayed to provide traffic control while Saginaw Township firefighters worked at the scene, Herren said. Members of the fire department remained at the store Monday morning.

Investigators are working to determine if heavy snowfall was a factor in the roof collapse. A snowstorm dropped 8.8 inches of snow in the Saginaw area in the past few days, according to National Weather Service information from snowfall recorded at nearby MBS International Airport.

"You would think (the snowfall) contributed to it," Peterson said, adding that Kmart has its own investigators that will work to determine the cause of the collapse.

Howard Riefs, a spokesperson for the company, emailed a statement about the collapse: