(Reuters) -A shell hit a temporary Russian military camp near the border with Ukraine late on Tuesday, Tass news agency said and cited a source as saying preliminary data showed it had been fired from the Ukrainian side. Tass issued the report shortly after a senior local official reported a series of explosions outside the city of Belgorod, close to the border with Ukraine. Video posted online from two local Belgorod news outlets appeared to show ammunition blowing up in the distance but Reuters was not immediately able to confirm this was the case. Tass cited an emergency services source as …