Last week the Kai Xin caught fire in the Antarctic and the crew was evacuated from the ship. The Chilean government had already sent a tugboat to try to tow it back to port or at least monitor and combat the potential environmental impact of fuel spillage. However, before the tugboat got there the ship had sunk. The tugboat will still monitor for fuel spillage, but it appears that there is not much chance of an issue from fuel because the fire is thought to have burned off most if not all of what was aboard.
Source: Chile says Chinese factory fishing ship that burned off Antarctica has sunk with no one aboard (Washington Post)