Three school attacks in Poland leave one dead

A school worker, 37, was killed and others, including children, were hurt in three attacks in four days in Poland's Mazovia, around Warsaw. Police say a 19-year-old hurt nine at a school that teaches job skills, a 15-year-old killed the worker in Leszczydół-Nowiny, and a woman hurt three in Warsaw. Prime Minister Donald Tusk blamed praise for violence online.