This time in Pittsburgh. Three students shot outside or very near school by either one person, or three, who came out of woods and on the loose. One student in stable condition, others not life-threatening, they say. More here and more to come. One report: "Police said three men dressed in black were reported shooting toward the school from a hill above." Latest has a shotgun shell recovered and police outside a nearby home. Largest high school in city. Now a report that victims knew the shooters and might be connected to gang/drug incident at school on Oct. 18.