Investigators are searching for whoever poured deer urine into an air conditioning unit at a school in eastern Tennessee. About a dozen students became ill after the prank at Volunteer High School in Church Hill.

Firefighters were sent to the school Monday after the odor became overpowering in one classroom, and paramedics treated students who complained of headache and nausea.

Church Hill Police Chief Mark Johnson said the stunt could result in a vandalism charge.

Deer urine is sold by the bottle to be used to attract the animals for hunting and mask the hunter's scent.