A separatist-run news agency cited emergency services official Sergei Ivanushkin as saying Friday that the separatist-held parts of Luhansk region have seen a spate of accidents recently because of careless use of explosives. Ivanushkin said a man and woman were hospitalized after Thursday's incident.
The blast occurred at a "cheburechnaya" — a restaurant serving fried pastries — that also offered duckpin bowling, which uses a ball without holes on a relatively short lane.
East Ukraine has been wracked by war for almost a year, during which time the region has become flooded with small arms and grenades.
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