St. Charles, MO  (KTRS)  An overnight fire at a St. Charles hotel is being investigated.

Firefighters responded to the fire at the InTown Suites on Veterans Memorial Parkway at just before 1 a.m. Tuesday. More than fifty guests had to be evacuated.

Fire officials say the fire started on the first floor of the building. About a half of a dozen units sustained damage.

No one was hurt in the fire.