When Rising saw that the Dutch were getting the upper hand at Fort Trinity, he delegated Hendrick Elswick[27] to enquire what their real intentions were. “Factor Elswick came from Fort Christina,” says Stuyvesant, “and asked in a friendly way and in the name of his director the cause of our coming, and ... [desired to see] the orders of our superiors.... He requested us to be satisfied with what we had accomplished, without advancing further upon the other Swedish fort, using at first persuasive and friendly words, afterwards mingled with menaces.” Stuyvesant was on the point of detaining Elswick as a spy, but finally dismissed him with the reply that he had come to occupy the whole of New Sweden, and would not desist before he had accomplished his object. On receiving this message Rising collected his people in the fort, and set them to work on the walls and battlements day and night. On Sunday, September 2, divine services were conducted as usual, but afterwards they “worked busily on the fort.” During the day an Indian, who sold a pig in the fort, related that he had seen the Swedish soldiers of Fort Trinity carried prisoners to the Dutch vessels. This disheartened the garrison and only with difficulty could Rising keep up its courage. On the same day a division of the Dutch force was marched up within sight of Christina, but Stuyvesant remained at Fort Casimir. On Monday morning the Dutch raised their flag on the Swedish sloop in the river above the Swedish fort, and since they prepared to take a stand by a house in the neighborhood Lieutenant Höök with a drummer was sent there to inquire what their intentions were, and why they stationed themselves there. From his boat he was assured by the Dutch that he would be treated according to the rules governing the reception of messengers by belligerents, but upon landing he was made a prisoner and sent to Fort Casimir in chains.[28] The Dutch rushed the work on the trenches to such an extent during the night that their battery was ready the following day. The Swedes now supposed that Stuyvesant intended to build a fort there, so as to be able to control the whole district below Christina River, for it was not yet believed that he had come to subjugate the entire colony.