The US is carrying out an operation to seize a tanker linked to Venezuelan oil, an official tells CBS, the BBC's US news partner.

The U.S. is targeting the so-called "shadow fleet" of ships that the government says illegally transports oil from sanctioned nations like Russia, Iran and Venezuela.

Helicopters and at least one Coast Guard vessel south of Iceland were used to take control of a tanker formerly known as Bella 1 that had eluded the U.S. for more than two weeks, according to U.S. off...