The oldest and only surviving son of Guaram Mampali, Nasra murdered his cousin David I, curopalates of Iberia, in 881.
The reason for committing this crime probably was that Guaram Mampali prior to his death had given away his all territories which had practically left Nasra without an inheritance.
Bagrat also managed to secure the Byzantine military aid and invaded the Bagratid possessions on Nasra's behalf.
Anxious to counterbalance the Byzantine influence in the Caucasus, Ashot I of Armenia interfered in support of David I’s son Adnarnase.
Nasra succeeded in taking the forts of Odzrkhe, Juaristsikhe and Lomsianta, but was finally defeated, captured and put to death at Aspindza.