At this time, most of Yemen was under the control of the Rasulid Dynasty which was Sunni Muslim and based in the lowland.
However, the Rasulids were on the alert and sent the redoubtable emir Alam ad-Din Sinjar al-Sha'bi with a force, "springing upon him like a cat."
The Zaidis were unable to withstand the incursion and Yahya's followers scattered to distant places.
Imam Yahya traveled to the land of Banu Fahim; however, the locals took him in custody and turned him over to Alam ad-Din.
You can help Wikipedia by expanding it.This biographical article about a person notable in connection with Islam is a stub.