Israeli fighter jets flew over 1,000 miles to strike the port city of Hudaydah in western Yemen on Monday, after Houthi militants fired a ballistic missile that landed near Israel’s main international airport this weekend.

There were no immediate reports of casualties.

The Israeli strike was the latest tit-for-tat volley between Israel and the Houthis, the Iranian-backed armed group that controls much of northwestern Yemen. For more than a year, the Houthis have been shooting missiles and drones at Israel, in what they call a solidarity campaign with Palestinians in Gaza.