The explosion at a pro-government base in Yemen that killed 45 Emirati soldiers also killed 10 Saudis in the kingdom's first losses inside the war-wracked country, Saudi media said Saturday.

Friday's blast was also reported to have killed five troops from Bahrain.

It was the worst day yet for the Saudi-led coalition that in March began a campaign of air strikes, targeting Iran-backed Shiite rebels, aimed at restoring President Abedrabbo Mansour Hadi's government to power.