Updated Oct. 18 at 11 a.m. ET
A student went on a shooting rampage and then shot and killed himself at a technical school in Crimea, which also was hit by an explosion, Russian authorities said Wednesday.
At least 20 people were killed and 50 injured in the gunfire and the blast, which officials told Reuters went off in the school cafeteria. Ten of the injured were in grave condition, Russian news agency TASS reported.