The blast occurred Sunday evening in a forest near the village of Spornoye in Russia's Belgorod Region, adjacent to Ukraine, when a fire was built on the ground to cook meat, police said in a statement.
Two people were seriously injured in the incident, and four others were hospitalized after sustaining cuts, the statement said.
Hundreds of unexploded bombs, artillery shells and other ammunition are found in Russia annually, especially in areas which saw intense World War II fighting, the Russian news agency RIA Novosti said.
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