Three Polish school attacks in four days leave caretaker dead, children injured

Three attacks in four days in Poland's Mazovian province left a 37-year-old school caretaker dead and others injured, including children. Police say a 19-year-old injured nine at a vocational school, a 15-year-old killed the caretaker in Leszczydół-Nowiny, and a woman injured three in Warsaw. Prime Minister Donald Tusk blamed online "glorification of violence."