The remains of a man who was shot in the head and stuffed into a rusted barrel found on the shore of Lake Mead after the water level dropped were identified Thursday as an Arkansas man whose decades-old killing remains unsolved.

Edward Lelburian Jackson was in his mid- to late 50s when he died, Clark County Coroner Melanie Rouse said.

Authorities are looking for people to come forward to help solve Jackson's killing.