The Saudi-led coalition said it had launched an offensive to target military positions in the Yemeni capital of Sanaa, Reuters reported Saturday, citing local media.

Axar.az reports citing Reuters that meanwhile, the Saudi Gazette media outlet detailed in the report that military targets included air defence sites and a ballistic missile storage site belonging to the Houthi militia in Sanaa. In particular, the coalition reportedly destroyed at least five air defence sites and a ballistic missile storage site.

Earlier this week, the Saudi-led coalition reportedly conducted two strikes at a military faculty in Ar Rawdah district in the northern part of the Yemeni capital of Sanaa. The coalition jets also bombed twice the camp in the area of the former presidential guard in the south of Sanaa.

Earlier in July, Houthi rebels carried out several attacks on two airports in southern Saudi Arabia. The Houthi military spokesman reportedly has warned of "more painful operations" to come if the Saudi-led coalition did not stop airstrikes on rebel targets.

Yemen has been locked in a conflict between government forces, led by President Abd Rabbuh Mansour Hadi, and the Houthis. The Saudi-led coalition has been conducting strikes against the Houthis at Hadi's request since March 2015. The conflict has resulted in a massive humanitarian crisis in the country.

The United Nations has repeatedly called the Yemeni conflict the world’s worst humanitarian crisis, with an estimated 24 million people - nearly 80 percent of the country’s population - currently in need of aid and protection.