UPDATE: The Three Rivers Fire Department reports crews responded along with Centreville Fire Department and Fabius Park Fire Department to a reported structure fire around 4:25 a.m., Tuesday.

Crews arrived to find fire showing through the building's roof, at which point additional resources were requested.

As a result, South Kalamazoo County Fire, Constantine Fire Department, and White Pigeon Fire Department responded to assist with firefighting operations.

The report states crews were on scene for about five hours.

The building sustained heavy damage, and the cause of the fire remains under investigation.

ORIGINAL STORY: THREE RIVERS, Mich. -- Emergency crews from multiple agencies responded to a large fire at an auto parts store near Wilbur Road S and US 131 in Three Rivers.

The call came in around 4:30 am, and authorities told us the fire started in the warehouse and no injuries were reported. The fire remains under investigation, and the cause is unknown at this time.