Houthi forces in Yemen said on Sunday they had launched rockets and drones at British, U.S. and Israeli ships, the latest in a campaign of attacks on shipping in support of Palestinians in the Gaza war.

The Iran-aligned group said it had targeted a British ship and a number of U.S. frigates in the Red Sea, while in the Arabian Sea and Indian Ocean it had attacked two Israeli vessels heading to Israeli ports.

The operations took place during the last 72 hours, Houthi military spokesperson Yahya Saree said in a televised statement, without providing further details of the attacks.

Britain and the United States have also been launching retaliatory strikes against the Houthis.

U.S. forces destroyed a mobile surface-to-air missile system in a Houthi-controlled area of Yemen Saturday, the U.S. Central Command (CENTCOM) said.

U.S. forces also shot down an unmanned aerial vehicle over the Red Sea, its statement said, adding that a coalition vessel also detected, engaged and destroyed one inbound anti-ship missile. No injuries or damage were reported.

Earlier, British security firm Ambrey said it had received information indicating that a vessel was attacked on Sunday in the Gulf of Aden about 102 nautical miles southwest of Mukalla in Yemen.

“Vessels in the vicinity were advised to exercise caution and report any suspicious activity,” the firm said. It did not say who was responsible for the attack or give further details.

Separately, a missile landed near a vessel in the Gulf of Aden on Sunday but there was no damage to the ship or injuries to crew in the incident, 59 nautical miles southwest of the Yemeni port of Aden, the United Kingdom Maritime Trade Operations (UKMTO) agency said.

“The Master of the vessel reports a missile impacted the water in close proximity to the vessel’s port quarter,” UKMTO said in an advisory note. “No damage to the vessel reported and crew reported safe,” it added.

It did not say who fired the missile or give further details. It was not immediately clear if the attacks reported by the British agencies were the same as the latest incidents claimed by the Houthis.

Houthi attacks have disrupted global shipping through the Suez Canal, forcing firms to re-route to longer and more expensive journeys around southern Africa. The United States and Britain have launched strikes on Houthi targets in Yemen.