Radagaisus, whose early career and ultimate origins are unknown, fleeing Hunnic pressures, invaded Italy without passing through the Balkans, which indicates that his invasion began somewhere on the Great Hungarian Plain, west of the Carpathian Mountains. Archaeological finds of coin hoards, buried by residents who were apparently aware of Radagaisus's approach, suggest that his route passed through southeastern Noricum and western Pannonia. About this time Flavia Solva was burned out and largely abandoned and Aguntum was devastated by fire. An indeterminate number of refugees fled ahead of his army as it marched over the Alps. It was said by contemporaries that Arian Christians swelled his forces.