MOSCOW, May 25. /TASS/. Russian security services have thwarted a terrorist attack aboard an explosives-rigged vessel that arrived at the Russian port of Ust-Luga from Belgium and was supposed to head to Turkey, the Federal Security Service (FSB) said in a statement.

"The Federal Security Service, acting together with the Investigative Committee, the Defense Ministry and the National Guard, thwarted a terrorist attack aboard the Arrhenius gas carrier, which arrived at the port of Ust-Luga in the Leningrad Region from the Belgian port of Antwerp to be loaded and then proceed to the Turkish port of Samsun," the statement reads.

According to Russian Investigative Committee Spokesperson Svetlana Petrenko, the vessel entered the sea port on May 20. During an inspection of the gas carrier’s underwater hull, divers discovered foreign objects with magnets, which were attached to the hull where the ship’s engine room is and looked like explosive devices. "An inspection involving an underwater drone, carried out by members of an interagency group of bomb experts, left no doubt that the items were indeed explosive devices similar to naval magnetic mines, which had presumably been made in a NATO country using industrially manufactured products," the FSB specified. According to the agency, each of the devices contained about seven kilograms of plastic explosives.