Tennessee Highway Patrol officer and deputy sheriff killed in helicopter crash

Two Tennessee law enforcement officers died when their helicopter hit power lines and crashed in a wooded area. The lines fell across an interstate and lanes of the highway were shut down as first responders looked for the crash site, officials said.

A Tennessee Highway Patrol officer and a Marion County deputy sheriff were killed in the crash Tuesday afternoon in Marion County, Highway Patrol Capt. Travis Plotzer said. Their names were not immediately released and he didn't take questions at a news conference. He said the National Transportation Safety Board was leading an investigation.

The helicopter hit power lines on Aetna Mountain near Whiteside, Tennessee, causing the lines to fall across Interstate 24, officials said.