Guerino Gino Marconi Sr. was 42 when he was shot and killed on April 10, 1999, in Philadelphia. He was standing on his front porch on 20th Street near Porter Street when an assassin fired a rifle, fatally wounding Marconi. A female friend who was with him was seriously injured in the attack.

Marconi, described as a little-known mob associate, remains an unsolved homicide. No arrests or charges have been announced and the assassin’s identity and motive are unknown. The case is listed among other unresolved mob-related murders in Philadelphia.

Anyone with information about that night on 20th Street near Porter Street or who knew Marconi is asked to come forward with tips that might help bring justice.