BUCHAREST, July 2 (Reuters) - A blast occurred at Romania's Black Sea crude oil refinery Petromidia early on Friday, and two people were injured, a government official for the Constanta country, where the plant is located, told Digi24 TV.

Footage taken by a tourist, broadcast by Digi24 from a nearby beach in the coastal resort of Mamaia, showed black smoke rising from the area next to the refinery, owned by Rompetrol Rafinare, part of KMG International Group.

"It was a blast. Ambulances are being sent there, apparently there are two victims with burns," Silviu Cosa told Digi24 TV.

(Reporting by Radu Marinas; Editing by Jane Merriman)