LONDON - Irish authorities say they are monitoring a major oil spill that is heading toward the Irish coast.
The Irish Marine Department says the oil slick was discovered close to where a Russian warship was refuelling in the Celtic Sea between western Britain and the southern coast of Ireland.
It said Tuesday that it was too early to predict how much of the spill will come ashore.
Irish authorities learned about the spill Saturday through surveillance carried out by the European Maritime Safety Agency in Lisbon, Portugal.
The Russian navy confirmed that one of its carriers was refuelling at sea from a Russian supply tanker. Russian, British and Irish boats are at the site of the spill off the west coast of Ireland.