BEIRUT (AP) — Crude oil appeared to be leaking and spreading in recent days from a sanctioned tanker grounded off the coast of Oman, close to a marine protected area, satellite images reviewed by The Associated Press show. The images, the last of which was on Friday, show an oil sheen covering about 20 square kilometers (8 square miles) and dark spots of crude oil slicks on the shores of Dhofar’s Qibliyah Island, part of the Hallaniyat Islands. The images indicated that the crude oil was gradually coming out of the tanker in low quantities over the last week, affecting shorelines in the area, and has spread into a thin sheen around the island, said Wim Zwijnenburg, an environmental expert for PAX, a Dutch peace organization that focuses on conflict and the environment. “The last few days, the imagery indicates an increase in oil coming out, as the size of the ... sheen is growing,” he said. “The main risk is the breaking of the ship” as the windy monsoon season “might take its toll on the hull.” Seas are rough and there are strong winds during the monsoon season of May to September.

Zwijnenburg estimated the tanker is carrying more than 800,000 barrels of crude oil. Images from July 28 showed the crude was mostly in the bay northwest of the ship, which ran aground off Qibliyah Island, with the oil sheen enveloping the coast, he said.