March 4 (UPI) -- A Russian liquefied natural gas tanker sank in the Mediterranean Sea on Wednesday after catching fire from what Russian officials said was an attack by Ukrainian drones.

Libyan port officials said there were explosions on the ship and it ultimately erupted in flames between Libya and Malta. The tanker was carrying about 62,000 metric ton of liquefied natural gas.

Thirty crew members were rescued and no deaths have been reported, TASS Russian News Agency reports.

Ukraine's security service has not commented on the incident.

The Russian Transport Ministry said in a statement that the tanker was attacked by unmanned Ukrainian boats.