The GBC News broadcaster said that "the Adrian Darya, formerly the Grace 1, is leaving" the territorial waters of Gibraltar.

Iran Press/Europe: The authorities of Gibraltar have rejected the US request to extend the seizure of Iranian tanker Grace 1, citing differences in US and European sanctions against Iran. 

....and there she goes! After 46 days in Gibraltar Waters sparking an international incident with Iran, the Adrian Darya, formerly the Grace 1, is leaving... pic.twitter.com/IdxWFgVBwm

— GBC News (@GBCNewsroom) August 18, 2019

The marine traffic monitoring site also showed that the Iranian supertanker was moving away from Gibraltar.

The vessel is now signaling that it is underway. There's less than a nautical mile to go before crossing the EU/Gibraltar maritime border. #GRACE1 #AdrianDarya1 #OOTT pic.twitter.com/MM50mknVRZ

— TankerTrackers.com, Inc.⚓️