Russia has deployed a submarine and other naval vessels to escort an aging oil tanker, Bella 1, the Wall Street Journal reported on Tuesday , citing a U.S. official.

Reuters could not immediately verify the report.

American forces have been pursuing the tanker, which maritime groups have identified as the Bella 1, for almost three weeks.

DESCRIPCIÓN DE IMÁGENES

1. VARIOUS STILLS OF BELLA 1 VESSEL