Israel’s military said it intercepted a missile launched from Yemen early on Thursday as hostilities with the Houthis intensified, amid US President Donald Trump’s threats to punish Iran over its perceived support for the Yemeni militant group.

Sirens sounded across several areas in Israel after the projectile was fired, the military said. The Israeli police said sirens were heard in Tel Aviv and Jerusalem.

“A missile launched from Yemen was intercepted by the IAF prior to crossing into Israeli territory. Sirens were sounded in accordance with protocol,” the Israeli military said in a statement, referring to its air force.

Israel’s ambulance service said no serious injuries were reported.

Yemen’s Houthi militants, undeterred by waves of US strikes since Saturday, fired a ballistic missile toward Ben Gurion Airport near Tel Aviv, the group’s military spokesperson said in a televised statement.

The group has recently vowed to escalate their attacks, including those targeting Israel, in response to the US campaign.

US strikes which began on Saturday over the Houthis’ attacks against Red Sea shipping are the biggest US military operation in the Middle East since President Donald Trump took office in January. The US attacks have killed at least 31 people.

Trump also threatened on Monday to hold Iran accountable for any future Houthi attacks, warning of severe consequences. Iran’s Revolutionary Guards said the Houthis were independent and took their own strategic and operational decisions.

On Tuesday, the Houthis said they had fired a ballistic missile towards Israel and would expand their range of targets in that country in coming days in retaliation for renewed Israeli airstrikes in Gaza after weeks of relative calm.

The Houthis have carried out over 100 attacks on shipping since Israel’s war with Hamas began in late 2023, saying they were acting in solidarity with Gaza’s Palestinians.

The attacks have disrupted global commerce and prompted the US military to launch a costly campaign to intercept missiles.

The Houthis are part of what has been called the “Axis of Resistance” - an anti-Israel and anti-Western alliance of regional militias including Hamas, Lebanon’s Hezbollah and armed groups in Iraq, all backed by Iran.