text:  Police looking for a motive in a mass shooting yesterday in Crete, Nebraska. Seven people wounded at a house. Police say a man across the street fired. Colonel John Bolduck, Nebraska State Patrol. I can say that three of the victims are adults, ranging in ages from 22 to 43. Four of the victims are children, ranging in age from 3 to 10. Police say in the house they found a shotgun near the body of Billy Booth, 74, and that apparently he shot himself.