An aid convoy entered Yemen's city of Taiz on Thursday amid efforts by the UN to help more than 300.000 people who have been besieged for nine months.

In a press release by the WFP said on Monday it had managed to send a 12-truck convoy into the besieged areas of Al Qahira and Al Mudhafer districts carrying enough food for 3,000 families for one month.

"The convoy entered these areas following extensive negotiations to allow WFP to deliver life-saving assistance to thousands of hungry people in desperate need," it said.

This breakthrough delivery coincided with a joint UN mission to Ibb, northeast of Taiz City where UN humanitarian officials met local representatives and witnessed the safe arrival of humanitarian assistance, it added.

Moreover, WFP appealed for regular and safe passage of food to all civilians in need across Yemen.

The Houthi militant group imposed the siege around Taiz as a war tactic nine months. It has been depriving the city of all commodities and has also been harassing people who have been trying to smuggle necessary supplies into it.

Lately as the humanitarian situation and medical facilities continued to deteriorate, volunteers have started to use donkeys and camels to smuggle life-saving food and medicines.

In the meanwhile, the battles between the pro-government and Houthi forces are escalating as the government with support from the Saudi-led coalition are seeking to liberate the city from the Houthis.