houthis
The country is being ravaged by war.
A nearly three-week military blockade has left about 7 million people facing famine.
People at the scene said the warplanes were believed to be from a Saudi-led Arab coalition waging a campaign against the Houthi movement.
It's unknown who was behind the attack.
WHAT'S HAPPENING
Health officials declared a state of emergency in Yemen's capital.
A Saudi-led coalition is preparing an offensive against one of the last entry-points for humanitarian aid in Yemen.
Yemen’s conflict has claimed the lives of more than 10,000 people and pushed the impoverished country to the brink of famine.
Many waved national colors and denounced the U.S. and Saudi Arabia over the conflict.
The U.N. said more than 4,700 civilians have been killed and 8,200 injured in the war, which enters its third year Sunday.