PITTSBURGH (AP) — Prosecutors in western Pennsylvania have withdrawn charges against five men charged in a shooting at a neighborhood vigil in Pittsburgh 4 1/2 years ago that wounded three people, two of them children. The Pittsburgh Post-Gazette reports that the action by the Allegheny County district attorney’s office Friday came 10 days before jury selection was scheduled in the case. A prosecutor cited “the murder of a commonwealth witness, subsequent lack of cooperation of witness and other evidentiary issues.” The September 2015 gunfire occurred at a vigil in the Homewood neighborhood to mark the two-year anniversary of a young man’s shooting death nearby.