PANAMA CITY, July 20 (Reuters) - Panama's maritime authority said on Saturday it had begun the process of withdrawing the registration of an oil tanker called MT Riah, which was towed to Iran after it disappeared from ship tracking maps in the Strait of Hormuz on July 14.
Panama began the flag withdrawal process on Friday after an investigation determined the tanker had "deliberately violated international regulations" by not reporting any unusual situation, the authority said in a statement.
Iran has said it towed a vessel into its waters from the strait after the ship issued a distress call. Although Tehran did not name the vessel, the Riah is the only ship whose recorded movements appear likely to match that description.
U.S. officials have said they are unsure whether the tanker was seized by Iran or rescued after facing mechanical faults as Tehran asserts, creating a mystery at sea at a time of high tension in the Gulf. (Rerpoting by Elida Moreno; Writing by Frank Jack Daniel; Editing by Anthony Esposito)