No foul play is suspected in two fires that started early Wednesday morning in Polk County.

The Polk County Sheriff's Office is investigating the fires that happened around 1:30 a.m. Wednesday. The first report came in at 1:21 a.m. at 37772 210th Ave. S.E., in Erskine, where a structure sustained extensive damage from the blaze, according to a news release.

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No injuries were reported.

The second fire occurred at 1:30 a.m. when an industrial dryer used to dry crops at West Central Ag Service in Beltrami. No injuries were reported, but the property at 606 Atlantic Ave. sustained extensive damage, the release said.

The cause of the fires is unknown, the Sheriff's Office said.