The U.S. military says it has boarded a sanctioned oil tanker in the Indian Ocean. The Pentagon said Monday that American forces tracked the vessel from the Caribbean Sea. The Pentagon didn't say whether the ship was connected to Venezuela, which faces oil sanctions and relies on a shadow fleet to smuggle crude. A co-founder of TankerTrackers.com says the ship departed the Venezuelan coast last month after U.S. forces captured then-President Nicolás Maduro. According to data transmitted from the ship Monday, the ship isn't currently carrying oil. The Panamanian-flagged tanker is under U.S. sanctions related to the shipment of illicit Russian oil.