Overview

• Leidy, 60, was arrested at his South Philadelphia home about a block from where Guerino "Gino" Marconi was killed in 1999.
• He faces federal counts including murder, attempted murder, and possession of a prohibited firearm, along with several related offenses.
• Leidy was arraigned without entering a plea and is being held without bail, according to court records.
• Police said in 1999 that the assailant used a .22-caliber rifle, wounded Patricia Miley, and torched a van to destroy evidence.
• Authorities have not disclosed the evidence linking Leidy to the case, and officials noted earlier probes had flagged his name as investigators from PPD, the FBI and prosecutors worked the cold case.