The Denison Fire Department is investigating as suspicious, two structure fires that happened early Sunday morning. Both the structures were vacant.
The first fire occurred at 12:07 a.m. in the 700 block of Brock Street. Denison Fire Marshal John Weda said crews were able to extinguish the blaze quickly.
The second fire was at 5:44 a.m. in 600 block of W. Day St. Weda said when crews arrived, the two-story structure was fully involved. The house was destroyed.
No one was injured in either of the fires. Weda said the investigation is on-going.