U.S. officials told reporters the oil aboard the ship was worth some $130 million and was destined for a designated terror organization.The unsealed court documents argued that Iran’s Islamic Revolutionary Guard Corps are the ship’s true owners through a network of front companies.Authorities in Gibraltar said Sunday that, unlike in the U.S., the Iran’s Revolutionary Guard is not designated a terrorist organization under EU, U.K. or Gibraltar law.The Iranian spokesman warned Monday against any order by the U.S. Justice Department to have the renamed ship seized again.”If such an action is taken or even if it is stated verbally and not done, it is considered a threat against the maritime security in international waters,” said Mousavi. “The Islamic Republic of Iran has given necessary warnings to the U.S. officials through official channels, especially the Swiss Embassy in Tehran, not to commit such a mistake which (could) bring them severe consequences.The Reuters news agency quotes Iranian Foreign Ministry spokesman Abbas Mousavi as saying, “Such an action, and even the talk of it…would endanger shipping safety in open seas.”Switzerland represents U.S. interests in Iran, which has no diplomatic ties with the U.S.

The Iranian ship was detained while sailing under a Panamanian flag with the name Grace 1. It changed the name on Sunday and hoisted an Iranian flag.