Yemen on Wednesday condemned Houthi attacks on Marib in a letter to the UN Security Council, saying the Iran-backed militia‘s targeting of civilians in the area is causing a humanitarian catastrophe.

The Houthi militia launched a brutal offensive in February to take control of oil and gas-rich Marib from the internationally-backed government.

The offensive sparked international condemnation, particularly as the region has served as a safe haven for tens of thousands of people who fled fighting since the conflict began in 2014.

During the session, Yemen also called on the UN Security Council to push for an end to Houthi attacks on civilians in Marib and Hodeidah.

Meanwhile, the Iranian opposition leader said during the session that Iran’s human rights violations cases should be referred to the Security Council.

“The leaders of the regime must be brought to justice for their crimes against humanity over the past four decades,” she added.