U.S. federal agents and maritime officials boarded a commercial ship heading for the Gulf of Mexico to analyze its network security. Iran state media reported that hackers gained control of the vessel's propulsion, navigation, and cargo systems, leading to a 30 hour loss of communications. The Coast Guard announced Tuesday that no operational disruptions occurred during the incident, though the vessel's network was compromised by a foreign actor.

The investigation covers two foreign energy tankers that were attacked near the Strait of Gibraltar in August. One vessel carried more than 2 million barrels of oil to Galveston and another carried liquefied petroleum gas to a Texas port. U.S. officials are probing links to Iran after the breaches created risks of navigation failures, collisions, or explosions.