The U.S. Coast Guard is pursuing yet another oil tanker off the coast of Venezuela on Monday that officials claim is part of an illegal sanctions evasion."The United States Coast Guard is in active pursuit of a sanctioned dark f leet vessel that is part of Venezuelas illegal sanctions evasion. It is flying a false flag and under a judicial seizure order," a U.S. official told Scripps News.It's the third such oil tanker being seized by the U.S. in a matter of days.RELATED STORY | What's really behind the tension between the US and Venezuela?On Saturday, the U.S. administration announced it had seized a tanker for the second time in less than two weeks. The next day, officials said they were pursuing a second tanker. The Coast Guard, with assistance from the Navy, seized a sanctioned tanker called Skipper on Dec. 10, another part of the shadow fleet of tankers that the U.S. says operates on the fringes of the law to move sanctioned cargo. It was not even flying a nations flag when it was seized by the Coast Guard.President Donald Trump, after that first seizure, said that the U.S. would carry out a blockade of Venezuela. It all comes as Trump has ratcheted up his rhetoric toward Venezuelan President Nicols Maduro.RELATED STORY | Trump announces blockade of Venezuelan oil tankers ...read more read less