Update as of 3:30 a.m. Tuesday, April 10th:
Fire crews continue to investigate the cause of a fire at Cadillac Truck Services on 39 Road just outside of downtown Cadillac.
Crews were still on the scene well into Tuesday morning at the scene of the fire that started around 9:30 Monday night. More than 50 members different fire and police branches were on the scene of the massive fire.
No one was inside the building at the time. Around 11 o'clock Monday night the flames on the outside of the building were under control and the main concern became small fires spreading inside.
Fire crews plan on returning to the scene this afternoon to continue their investigation into what caused the fire.
Fire crews are trying to get control of a large fire at a Cadillac business.
The fire started around 9:30pm at Cadillac Truck Service. The business is located at 4675 39 1/2 Rd.
Witnesses tell 7&4 News several surrounding roads are shut down while crews battle the blaze. We'll bring you more details as they are released on this developing news.