With Zeno far from Constantinople, Aspar had increased his influence by having his son Patricius appointed "Caesar" and married to Leo I's younger daughter, Leontia (470). Sources are contradictory on the causes, but clearly state that in 471, Leo I had Aspar and Ardabur treacherously killed. This certainly occurred with Zeno's and Basiliscus' approval, as, on the eve of the murders, the two generals had moved closer to Constantinople (Zeno was at Chalcedon). Thereafter, Zeno returned to Constantinople and was appointed "magister militum praesentalis".