Fire early Sunday morning damages three houses in the 1100 block of Valley in Hannibal.

Hannibal firefighters say a smoke alarm alerted a homeowner to the fire at 1110 Valley around 3:30 a-m. Firefighters arrived to find fire had spread to 1112 Valley and the attic at 1116
Valley also sustained damage. Several off duty firefighters were called in. No word at this time on the cause. The Missouri Fire Marshall's office has been called in to help in the investigation