PEMBERVILLE, OH – Authorities say a 19-year-old Michigan man shot and killed an Ohio teenager in her home before turning the gun on himself.

The Associated Press reports Lukas Miller, 19, of Clay Township and Cierra McCrory, 17, of Pemberville, Ohio were both found in a home in the city around 9:15 a.m. Thursday, March 5.

An initial investigation by the Wood County Sheriff’s Department found the deaths were from an apparent murder-suicide, but they are still working to determine what relationship McCrory and Miller had and what spurred the shooting.

McCrory was junior at Eastwood High School, where grief counselors have been brought in to help fellow students deal with the tragedy.

Miller had also been a student at Eastwood, withdrawing about three years ago, according to the Associated Press.