At least five soldiers were killed and 20 others wounded in two explosions at military barracks in the Yemeni southern city of Aden, security officials told EFE on Sunday.

The explosions in Aden, which is a provisional capital for the government of Yemeni President Abd Rabbuh Mansour Hadi, took place accidentally, the officials said.

The source added that the soldiers had been moving ammunition to two vehicles in order to send it to the front at the time the explosions occurred.

Government forces are fighting against Houthi rebels in the west of the Arab country.

The conflict in Yemen erupted when the Shiite Houthi rebels occupied the capital Sanaa and other northern and central provinces of the country in Sept. 2014, forcing the Yemeni government to move to the southern city of Aden.

The war intensified in Mar. 2015 when the United States-backed Arab military coalition intervened directly in Yemen to support forces loyal to internationally-recognized president Hadi.