SANA, Yemen — An airstrike at a busy street market in northern Yemen has killed at least 25 civilians and wounded at least nine, Yemeni health officials said on Wednesday.

The attack late Tuesday destroyed a building in the center of a market in the northern province of Sada, the heartland of the Shiite rebels known as Houthis. The health officials said children were among the victims.

The Houthis, backed by Iran, have controlled much of the country since 2014, when they overthrew the internationally recognized government of President Abdu Rabbu Mansour Hadi. An Arab coalition led by Saudi Arabia and supported by the United States is fighting to restore that government. The conflict has killed an estimated 10,000 people and displaced at least three million, and the United Nations now describes Yemen as the world’s worst humanitarian crisis.

The health officials said the airstrike on Tuesday had probably been carried out by the Arab coalition. Saudi Arabia has been bombing Yemen since March 2015.