Both Aragon and Pamplona have remained outside Carolingian control; western Gascony continues in revolt.

According to the Vita Hludowici, the counts Aznar Sánchez and Aeblus, Frankish vassals, lead an army across the Pyrenees in 824 against rebellious Pamplona to reestablish control.

According to the Annales regni Francorum of Einhard, they (Aeblus and Aznar) bring a great deal of wealth with them.

They are defeated by joint Pamplonese and Banu Qasi forces in a "second Roncesvalles", and Pamplona gains its independence as the kingdom of Navarre while the two counts are captured.

Aznar, however, being a relative of his captors, according to Astronomus, is released.

Aeblus is sent a prisoner to the Emir of Córdoba, where he will die a captive.

García the Bad and Musa ibn Musa al-Qasawi of the Banu Qasi had probably lent their support to the Basque Íñigo, leading to the defeat of the Frankish counts.

The Basque victors are not named, but it is in the context of this defeat that Íñigo Arista is said to have been pronounced "King of Pamplona" in that city by the people.