Yemen security officials say Shiite rebels have attacked an Islamist party headquarters in a central province, killing four guards and blowing up the building.

The officials said the rebels, also known as Houthis, attacked the Islamist Islah Party headquarters in Ibb province and fought with the guards until early Saturday.

Mediators managed to stop the fighting and allow those who were inside the party headquarters to leave, but the Houthis later detained 25 people and took them to the office of the provincial governor, a Houthi himself.

The Houthis blew up a nearby dispensary belonging to the Islah Party, forcing hundreds of people to flee the area, the officials said on condition of anonymity because they are not allowed to brief the media.