ROANOKE, Va. — Police are hoping that facial reconstructions will lead to answers in four unsolved deaths in southwest Virginia.

Media outlets report that authorities unveiled the clay busts of four men Wednesday at the medical examiner’s office in Roanoke.

Police don’t know the identities of any of the men.

One case involves a skull found in Carroll County in April 2012. Another man’s remains were found in Allegheny County in 1986. The other cases involve the remains of two men found in Lee County in November 2011 and in Pittsylvania County in December 2005.