A merchant vessel was "taking on water" off the Yemeni port of Hodeidah on Tuesday after it was damaged in a missile attack, maritime security firm Ambrey said. 

The ship was "targeted with three missiles," Ambrey said, adding that a distress call said it "had sustained damage to the cargo hold and was taking on water." 

The firm did not identify the ship or say how many crew members were aboard. There has been no immediate claim of responsibility for the attack.