local authorities said. Russian authorities have in the past months reported several violent incidents in schools, including two knife attacks at a university in the Urals and a school in Siberia, and an attack with an air gun in central Russia. The woman teacher, born in 1970, was attacked at the entrance to her school in the town of Dobryanka, regional governor Dmitry Makhonin said. "Unfortunately, despite all the doctors' efforts, Olesya Petrovna Baguta, a Russian language and literature teacher... could not be saved," he said in a later message. Police detained the attacker, identified by Russia's Investigative Committee as a 17-year-old student at the school. (Bssnews)