On 13 June 1558 it was sacked by elements of the Ottoman navy under the command of Dragut and his lieutenant Piali, as part of the struggle between the Turks and Spain, which controlled the southern half of Italy at that time. 2,000 captives were reportedly taken away. This struggle was waged throughout the Mediterranean and lasted many decades. The attackers were not "pirates" as often characterised, though some may have been mercenaries from North Africa. The campaigns were conducted on the direct orders of Sultan Suleiman. The attack led to the construction of a new line of walls. The most striking event of the following century was the revolt against Spanish domination of 1648, led by Giovanni Grillo. In 1656 a plague struck the city. However, Sorrento remained one of the most important centres of southern Campania.