Tensions between Prince Jayawikarta and the Dutch escalated until 1618, when Jayawikarta's soldiers besieged the Dutch fortress containing the Nassau and Mauritius warehouse. An English fleet of 15 ships arrived under Thomas Dale, former governor of the colony of Virginia. After a sea battle, newly-appointed Dutch governor Jan Pieterszoon Coen escaped to the Moluccas to seek support; the Dutch had taken over the first of the Portuguese forts there in 1605. Dutch garrison commander Pieter van den Broecke and five other men were arrested during negotiations, since Jayawikarta believed that he had been deceived by the Dutch. Jayawikarta and the English then forged an alliance.