WorldFACTBOX: What is known about the prisoner attack on Russian prison guards
A convict attacked Federal Penitentiary Service officers on a Vladikavkaz-Adler train in Kabardino-Balkaria, seized a service firearm and fired at the escort staff. One officer was killed and three were wounded; other guards neutralized the attacker. Authorities opened a criminal case and said the situation was under control.
FACTBOX: What is known about the prisoner attack on Russian prison guards