Three people have been found dead inside a barn in rural northeastern Tennessee following an overnight standoff with police.

Kristin Helm, spokeswoman for the Tennessee Bureau of Investigation, says the deaths initially appear to be a murder-suicide.

The incident began Monday night in Mooresburg, about 50 miles northeast of Knoxville.

Hawkins County Sheriff's officials told WJHL-TV in Johnson City that the victims were two men and a woman and investigators believe the shooter was among the dead.

Helm says officers found the bodies around 5 a.m. Tuesday and the state agency was asked by District Attorney General Berkley Bell Jr. to open an investigation.

The names of the victims will be released after next of kin are notified.