Yemen’s Houthi militia said on Tuesday that the Saudi-led coalition launched an airstrike on Houthi military site in the capital Sanaa.

The Houthi-run al-Masirah TV reported on Tuesday morning that the airstrike occurred around the al-Kasarat in Hamdan district in western Sanaa.

It added that residents across Sanaa heard a powerful explosion.

The coalition has made no comment yet.

The Houthis have recently intensified cross-border drone and missile attacks on Saudi cities.

All Houthi attacks had been intercepted, according to the coalition’s statements.

Yemen has been mired in civil war since late 2014, when the Iran-backed Houthi rebels seized control of several northern provinces.

This had forced the internationally-recognized government of President Abd-Rabbu Mansour Hadi out of Sanaa.