Police officers searched a Fairfax County pond for evidence in the murder of Alexandria music teacher Ruthanne Lodato.
The pond is located behind a home belonging to the parents of Charles Severance, who is under investigation in connection with Lodato's shooting death earlier this year.
West Virginia authorities say Severance is also being investigated in connection with the shooting death of Ronald Kirby in November 2013, as well as the death of Nancy Dunning a decade ago.
He was arrested last month on what his lawyer is caling a "sham charge" -- being a felon in possession of a firearm. Severance is fighting extradition to Virginia.
FBI agents and Alexandria Police officers searched the pond all day Tuesday, and returned Wednesday morning.
Alexandria officers would only say the search was "a step in the investigation."
Severance is due for another hearing April 23. Investigators have also searched a pond near the Ashburn townhouse where Severance lived.