At least 17 people have been killed and dozens more wounded in a shooting at a college in Russian-annexed Crimea.
Russian investigators says an 18-year-old student ran through the technical college in Kerch firing at fellow pupils before killing himself.
Officials had initially spoken of a blast caused by an unidentified explosive device.
Russia seized Crimea from Ukraine in 2014 in a move condemned by many Western powers.
The annexation followed a disputed referendum.