An Iranian oil tanker pursued by the US across the Mediterranean Sea slows to a near-stop off the coast of Syria, where America’s top diplomat alleges it will be unloaded despite denials from Tehran.

The ongoing saga of the Adrian Darya 1, formerly known as the Grace 1, comes as tensions remain high between the US and Iran over its unraveling nuclear deal with world powers. Tehran is set to send a deputy foreign minister and a team of economists to Paris tomorrow for talks over ways to salvage the accord after a call between Iranian President Hassan Rouhani and French President Emmanuel Macron.

The ship-tracking website MarineTraffic.com shows the Adrian Darya slowed to a near-stop on Sunday some 50 nautical miles (92 kilometers) off Syria. The ship’s Automatic Identification System does not show its destination after its mariners onboard previously listed it as ports in Greece and Turkey. Turkey’s foreign minister at one point suggested it would go to Lebanon, something denied by a Lebanese official.

The US has been warning countries not to accept the Adrian Darya, which carries 2.1 million barrels of crude oil worth some $130 million.

The US has sanctioned the Adrian Darya’s captain and has sought to impound the vessel.

Authorities in Gibraltar alleged the ship was bound for a refinery in Baniyas, Syria, when they seized it in early July. They ultimately let it go.

On Friday, US Secretary of State Mike Pompeo alleged on Twitter that the ship was still bound for Syria.

“We have reliable information that the tanker is underway and headed to Tartus, Syria,” Pompeo wrote on Twitter. “I hope it changes course.”

— AP