"We are certainly concerned about these reports that there was an attack that resulted in the deaths of civilians," Nauert said. "We call on a Saudi-led coalition to conduct a thorough and transparent investigation into the incident."
According to the information from the International Committee of the Red Cross, the attack took lives of at least 50 people, injuring 77 more. ICRC said that the majority of the victims were children.
Yemen is currently in a state of an armed conflict between the government headed by President Abd Rabbuh Mansur Hadi and the Houthi movement. The Saudi-led coalition has been carrying out airstrikes against the Houthis at Hadi's request since March 2015.