While Østervold was attempting to inspect "Main"s cargo, Captain Horve had a telephone conversation with Captain Aarstad at the Navy Command at Marineholmen in Bergen. Aarstad informed him that he had been taken prisoner and could not give Horve any orders. Soon after the conversation, a Royal Norwegian Navy Air Service M.F.11 patrol bomber seaplane landed in the harbour and its pilot reported that German ships, U-boats and aircraft were in the area and that the city of Stavanger had most likely been occupied.