Charles started to raise new troops and a fleet in Provence, and instructed his son, Charles of Salerno, to maintain a defensive posture until his return. Roger of Lauria based a small squadron on the island of Nisida to blockade Naples in May 1284. Charles of Salerno attempted to destroy the squadron, but most of his fleet was captured, and he himself was taken prisoner after a short, sharp fight on 5June. News of the reverse caused a riot in Naples, but the papal legate, Gerard of Parma, crushed it with the assistance of local noblemen. Charles learnt of the disaster when he landed at Gaeta on 6June. He was furious at Charles of Salerno and his disobedience. He allegedly stated that "Who loses a fool loses nothing", referring to his son's capture.