(Aliquippa, Pa.) An unidentified male was shot in Aliquippa Saturday night just before 11 p.m.at Meadow and Irwin Streets.   Aliquippa Police requested assistance from PA State police who are investigating.  No new information is available as of Monday morning. It was reported that 20 shell casings were found at the scene. A resident living in the area said she heard  shots being fired at  the time the man was shot.