Yemen's Houthis have launched attacks on three ships in the Red Sea, Mediterranean Sea and Arabian Sea, the Iran-aligned group's military spokesman Yahya Sarea said on Friday.

The attacks are the latest in a months-long campaign of Houthi strikes against regional shipping in what the group says is solidarity with Palestinians fighting Israel in the Gaza war.

Sarea said in a televised speech that Houthi forces had targeted the Yannis ship in the Red Sea, the Essex in the Mediterranean Sea and MSC Alexandra in the Arabian Sea.

Houthis "fired several missiles at the ship Essex in the Mediterranean Sea while it was violating the decision ban that prevents entry into occupied Palestinian ports", Sarea added.

He did not clarify when the attacks took place.

Earlier this month, the leader of Yemen's Houthis, Abdul Malik al-Houthi had said that all ships heading to Israeli ports would be attacked by the Iran-backed group, not just those in the Red Sea region which it has sought to strike before.

The Iran-aligned Houthi militants have launched repeated drone and missile strikes on ships in the crucial shipping channels of the Red Sea, the Bab al-Mandab strait and the Gulf of Aden since November to show their support for the Palestinians in the Gaza war.

This has forced shippers to re-route cargo to longer and more expensive journeys around southern Africa and has stoked fears that the Israel-Hamas war could spread and destabilise the Middle East.