[1][2] In 1350 the Almohad sheikh Ibn Tafragin overthrew Abu Ishaq's brother al-Fadl and had him proclaimed caliph instead.
Against this backdrop the Marinid ruler Abu Inan Faris of Fez, Morocco decided to make a fresh attempt to revive his father's expansionist plans.
[3]: 174–180 Under Abu Ishaq the work of rebuilding the walls of the medina of Tunis and extending it to include the medieval suburbs was undertaken.
Abu-Ishaq died in 1369 at the age of thirty two and was succeeded by his son Abu-l-Baqa Khalid II who was a young boy of no more than ten or twelve.
Factional struggles quickly broke out and it was easy for Abu al-Abbas Ahmad II to occupy Tunis in 1370.