The charters call it Ascloha and the Bavarian continuation of the Annales Fuldenses assigns the locale on the Meuse river, fourteen miles from the Rhine.

[2] Immediately after assuming the kingship of East Francia in Regensburg in early May, Charles the Fat, already emperor, held an assembly (late that same month) at Worms to determine a course of action against the Vikings who were encamped at Asselt.

An army comprising Franks, Alemanni, Bavarii, Thuringii, Saxons, and Lombards was assembled to march north and drive off the Vikings.

According to the biased account of the Mainz continuation of the Annales Fuldenses, the camp was about to fall when Liutward of Vercelli, bribed by the Vikings, convinced the emperor to meet envoys from Godfrid and make peace, even exchanging hostages.

The Bavarian continuator merely mentions that the initial ambush was thwarted by traitors and the subsequent siege — which lasted twelve days — by the spread of disease from rotting corpses and a very severe hailstorm.