A Grainger County high school student has been released from the hospital after being treated for injuries received in an assault at Washburn High School on Monday.

In a news release, Grainger County Sheriff Scott Layel said four teen girls were arrested in connection with the assault on a 15-year-old female victim.

One of the girls was charged with aggravated assault and the other three were charged with assault, Layel said.

The victim was being treated at UT Medical Center and was listed in good condition, according to Layel.

Union County officials are searching for the person they believe set six separate fires in six days.

The most recent two happened early Saturday morning.

The first was a barn fire on Hog Skin road around 1:45 a.m. The second fire broke out a few minutes later at a barn just a few miles away on Kettle Hollow Road, according to Gordon Sartain, chief of the Northeast Union Volunteer Fire Department.

The chief says the fires began about six days ago, and firefighters from several districts across the county have worked them for all but one night.

Three children have been removed from a Grainger County home that was the scene of a drug raid, and the sheriff says they were living in "horrendous" conditions. The raid happened at a home on Gray Road in Rutledge.

Several agencies including the TBI, Grainger County deputies and Rutledge police raided the home of John and Eddie Mullins on Thursday. The raid came after a two-year investigation. They say inside they found weapons, drugs, cash and children.