Yemen�s Houthi Ansarullah movement has called on the United Nations to seek an end to Saudi Arabia�s aggression against the impoverished country.

We look forward to your active humanitarian role in order to terminate the unjustified Saudi aggression against the besieged and oppressed people of Yemen, said the movement�s head of foreign relations, Hussein al-Ezzi, in a letter addressed to UN Secretary General Ban Ki-moon on Saturday.

According to the letter, the fuel stored at Yemeni hospitals, where thousands of injured people are being treated, will be finished in the next 24 hours.

The UN and the International Committee of the Red Cross warned on Friday that fuel shortages are threatening to stop relief operations in Yemen.

The letter also listed�several areas targeted by Saudi airstrikes, including in the provinces of Ta�izz, al-Jouf, Ma'rib, Aden and Sa�ada, and Sa�awan neighborhood in Yemen�s capital city of Sana�a.

Scores of residents of Sa�awan were killed or injured in Saudi raids while they were asleep, the letter read.

Saudi warplanes regularly bomb Yemen�s infrastructures, including hospitals as well as the�people�s houses and vehicles, according to the letter.

Saudi Arabia launched its military aggression against Yemen on March 26 - without a UN�mandate - in a bid to undermine the Houthi Ansarullah movement and to restore power to the country�s fugitive former president, Abd Rabbuh Mansur Hadi, who is a staunch ally of Riyadh.

On April 21, Riyadh announced the end of the first phase of its unlawful military operations, but airstrikes have continued with Saudi bombers targeting different areas across the country in a new phase.

UN Humanitarian Coordinator for Yemen�Johannes van der Klaauw�warned on Saturday of imminent collapse of Yemen's�infrastructure due to a major fuel shortage in the war-torn country.

"The services still available in the country in terms of health, water, and food are quickly disappearing because fuel is no longer being brought into the country," van der Klaauw�said.

On Friday, the�World Health Organization said 1,244 Yemenis lost their lives and 5,044 others were�injured from March 19 to�April 27. Hundreds of women and children are among the victims, according to the WHO.

By Press TV