(CNN) – Saudi-led coalition airstrikes killed 30 people, including 22 children, in a rebel-held area in northwestern Yemen on Thursday, according to the Houthi-controlled Health Ministry. Four families were evacuating their homes in a vehicle when the airstrikes hit, according to Houthi-owned media. Earlier coalition airstrikes on Wednesday killed four people and injured two, according to two surviving family members who preferred to remain anonymous for security reasons. “Four people were killed in the strike before, that’s why they fled. They wanted to save their lives, their children’s lives. Is nowhere safe for us?” one survivor said.