A ship traveling through the Red Sea on Thursday reported being hit off the coast of the rebel-held port city of Hodeida in an attack likely carried out by Yemen's Houthi rebels, the private security firm Ambrey said.
It wasn't clear if anyone was hurt or if the ship was damaged in the assault on the vessel, but a warship in the area was responding to the attack, Ambrey added.
Neither the British nor U.S. militaries immediately reported the attack.
The Houthis did not immediately claim the attack. However, it can take hours or even days for them to acknowledge their assaults.
The rebels have targeted more than 60 vessels by firing missiles and drones in their campaign that has killed a total of four sailors. They seized one vessel and sunk two since November. A U.S.-led airstrike campaign has targeted the Houthis since January, with a series of strikes on May 30 killing at least 16 people and wounding 42 others, the rebels say.
The U.S. military’s Central Command also said it destroyed a Houthi radar site. Another attack Wednesday in the Gulf of Aden was suspected to have been carried out by the Houthis, though they have yet to claim it.