With the death of Al-Hakam II in 976, the caliphate began to dissolve, and the position of the Jews became more precarious under the various smaller kingdoms. The first major persecution was the 1066 Granada massacre, which occurred on 30 December in which a Muslim mob stormed the royal palace in Granada, crucified the Jewish Vizier Joseph ibn Naghrela and massacred many of the Jewish population of the city. According to one source, "more than 1,500 Jewish families, numbering 4,000 persons, fell in one day". It was the first persecution of Jews on the Peninsula under Islamic rule.