UNDATED (WSAU) - The opening day of the gun-deer season was pretty hard on the hunters.

The Wisconsin Department of Natural Resources is investigating four shootings involving hunters. Near ideal conditions meant big numbers of hunters in the field Saturday. In Wood County, one hunter trying to shoot a deer hit another hunter instead. That accident happened near Arpin. The victim is reported to be in serious condition.

A 40 year old Edgar man was shot in the chest near the town of Wien in Marathon County about two hours later.  A hunter in Door County was hit in the thigh and, in Marquette County, a deer hunter was grazed by a bullet.