Jund Filastin
The fall of the city was allegedly the result of the betrayal of a certain Yusef, who conducted a party of troops of Muawiyah into the city. The city appears to have been partially destroyed upon its conquest. The 7th-century Coptic bishop John of Nikiû, claims there were "horrors committed in the city of Caesarea in Palestine", while the 9th-century Muslim historian Al-Baladhuri (d. 892) merely states that Kaisariyyah/Cæsarea was "reduced", mentioning it as one of ten towns in Jund Filastin (military district of Palestine) conquered by the Muslim Rashidun army under 'Amr ibn al-'As's leadership during the 630s.