Two Ukrainian soldiers were killed in a shelling by Russian-backed separatists on Saturday, with an additional four military officers wounded, the country's military said according to Reuters. Pro-Russian separatists said that one civilian had been injured in the clashes. The Ukrainian military said it had recorded 70 ceasefire violations by separatists since the start of the day compared with 66 cases over the previous 24 hours. Earlier, Ukrainian military leaders had to seek the shelter of a bunker during a tour of eastern Ukraine amid a shelling attack as tensions between the nation and Russia intensified. “The officials fled to a bomb shelter before hustling from the area,” The Associated Press reported, citing their own journalists on the scene. The Russia-backed shelling attack, which isn’t the first of its kind in the conflict, comes on the heels of separatist leaders calling for a “full military mobilization.”