t least 115 children have been killed and 172 injured in Yemen since Saudi-led coalition air strikes began in March, according to the UN's agency for the welfare of children.
A spokesman from UNICEF said on Friday at least 64 children who had died between March 26 and April 20 had been killed by the strikes.
"We believe that these are conservative figures," said UN official Christophe Boulierac.
Another 26 children had been killed by unexploded bombs and mines, 19 by gunshots, three by shelling and three by "unverified causes related to the conflict," the agency said.
Saudi Arabia and its Arab allies launched the air war at the end of March as Iranian-backed Houthi fighters swept across the country.