The State Department says it will revoke U.S. visas for crew members on an Iranian oil tanker that was seized by authorities in Gibraltar for sanctions violations but released Thursday.
The department says in a statement it intends to fully enforce all U.S. sanctions related to Iranian oil exports despite the decision by Gibraltar to allow the ship to leave. The Grace I was seized last month on suspicion of transporting Iranian oil to Syria in violation of European sanctions. Such deliveries are also barred by U.S. sanctions.
Gibraltar freed the ship after Iran promised the oil won't be sent to Syria.
The State Department also says the ship was assisting Iran's Revolutionary Guard Corps in evading sanctions. The Corps is designated a foreign terrorist organization by the U.S.