Alexandria police, with assistance from the FBI, on Wednesday searched a Fairfax County pond as part of their investigation into three high-profile slayings, authorities said.

A police spokeswoman would not comment on what they hoped to find or whether anything was uncovered in the search.

The pond is in Oakton, near the home of the parents of Charles Severance, a person of interest in the case who is currently jailed in West Virginia on a charge that is unrelated to the killings.

Severance, 53, was arrested in Wheeling last month on a low-level weapons charge out of Loudoun County. Ohio County prosecutor Scott M. Smith has said that Severance fled Virginia after learning that Alexandria police wanted to speak with him.

Alexandria’s mayor has called Severance a “person of interest” in the February slaying of music teacher Ruthanne Lodato, the November shooting of regional transportation planner Ronald Kirby and the 2003 killing of real estate agent Nancy Dunning.

He is scheduled to face an extradition hearing on April 23.

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