The United Nations is anxiously following the blast that took place Sunday in Sana'a and left civilian casualties, the international organization has said.
A large explosion at warehouse in the Yemeni capital on Sunday reportedly left at least 13 people killed, including 7 children, and more than 100 injured, UN spokesman Stephane Dujarric added, calling on all parties to practice maximum restraint and ensure safety of all Yemenis.
The Houthi-run health ministry said on Monday the blast left 109 casualties.
Death toll increased to 14, including 13 children, Minister Taha al-Mutawakil told reporters, noting that 95 people were wounded, including 43 children and 22 women.
"Most of the killed and injured children are 6 to 17 years old," he added.
Amid conflicted reports on the blast, Houthi group has blamed a Saudi-led coalition airstrike on residential area in Sawan District, but the coalition has denied shifting the blame onto the rebels.
The incident was resulted from an explosion at Houthi bomb workshop, coalition spokesman Turki al-Maliki added, claiming that their aircraft had not targeted populated areas.
The Arabic Sky News reported, according to its reporter in Sana'a, the death of 20 Houthis at the warehouse, in the nearby of a school.
The Saudi Al-Arabiya TV quoted eyewitnesses as saying that "aircraft of coalition, backing legitimacy in Yemen, targeted with several raids a camp in Sawan," to the east of Sana'a.
Military sources said Houthis had transformed the camp into a training center and arms cache, exploiting its location inside residential quarters.
Coalition warplanes have earlier hit warehouses and workshops of drones in the same area, according to Al-Arabiya.
Yemen has been racked by an armed conflict that broke out after the Iranian-backed Houthis had ousted the internationally recognized government late in 2014.
Saudi Arabia has been leading a military coalition in Yemen since 26 March 2015, in support of forces loyal to President Hadi to retake areas controlled by Houthi group seen as proxy for Iran in the Arabian Peninsula country.
The conflict has left tens of thousands killed, hundreds of thousands injured, and 3 million displaced, triggering the world's worst humanitarian crisis, according to the UN, with most of the population in need for a type of humanitarian aid and immediate protection, including 14 million people risking famine and some 1.8 million children suffering malnutrition.