Plutonium-uranium mixed oxide fuel was unloaded from a British cargo ship here Saturday after the vessel arrived at a special port earlier in the morning amid tight security.

The 5,271-ton Pacific Pintail, which set sail from the French port of Cherbourg in January with 28 containers of the highly toxic MOX fuel, docked at the private port for Tokyo Electric Power Co.'s Kashiwazaki-Kariwa nuclear power station at 6:10 a.m.

After the unloading, the fuel was transferred to the storage site inside the plant's compound later in the day. The shipment is the second of MOX fuel to Japan.

Tepco and Kansai Electric Power Co. took delivery of the first shipment of MOX fuel in the fall of 1999 for Tepco's No. 1 nuclear power plant in Fukushima Prefecture and Kansai Electric's Takahama nuclear power station in Fukui Prefecture.