A military spokesperson for Yemen’s Houthis has warned all shipping companies against cooperating with Israel, saying they will be a target of attack in the Red Sea, Reuters reports.

“If Gaza does not receive the food and medicine it needs, all ships in the Red Sea bound for Israeli ports, regardless of their nationality, will become a target for our armed forces,” Yahya Saree said, announcing a ban on the passage of all ships en route to Israel.

The Iran-aligned Houthis have been firing at Israel and ships in the Red Sea in a campaign they say aims to support the Palestinians. US warships have shot down several of their projectiles.