A Russian official said dozen of student have been attacked and wounded 0n Wednesday in Crimea, a rampage that killed 17 other students and left more than 40 people wounded, before killing himself Russian investigators said an 18-year-old student blamed for the attack had killed himself. Officials initially said an “unidentified explosive device” detonated, but now say all the victims died of gunshot wounds at the technical college in Kerch. Russia seized Crimea from Ukraine in 2014 in a widely criticised move. The annexation followed a disputed vote that was condemned by many Western powers. The alleged perpetrator of the college attack has been identified as Vladislav Roslyakov, who is said to have opened fire on those in the building. Forty people were injured. Russia’s RBC TV interviewed a friend who said he “hated the technical school very much”. The incident had initially been described as a “terrorist act”, but Russia’s investigative committee has now reclassified it as “mass murder”. President Vladimir Putin described it as a “tragic event” and expressed condolences to the victims’ relatives. A local official said most of the victims were students of the technical college, which is a vocational school for 850 teenagers. A major emergency response operation launched as the victims were taken to hospitals. Four military planes were ready to evacuate the wounded and military hospital facilities were ready to accept victims if necessary, Russian Defence Minister Sergei Shoigu said. Investigators had at first released a statement saying an explosive device filled with “metal objects” had detonated in the dining area. In earlier reaction, the director of the college, who was not at the scene at the time of the attack, told Russian media that unknown armed men had broken into the building. She compared it to the school siege of Beslan in 2004, during which about 330 people died.