A man squirrel hunting with his brother in Dodge County accidentally shot and killed his brother Tuesday morning.

The 61-year-old man told authorities he saw movement, fired his weapon and struck his 65-year-old brother, according to the Wisconsin Department of Natural Resources. Their names and hometowns were not immediately released.

Dodge County Sheriff's deputies, who are assisting the DNR in the investigation, were called to state-owned property near County Highway G and Mud Lake Road in Reeseville around 7 a.m.

Squirrel hunting season in Wisconsin started last weekend. Hunters are not required to wear Blaze orange or pink though they are encouraged to do so. It's not known what kind of clothing the brothers were wearing while they hunted.