Japanese navy supported landings on Celebes, Dutch East Indies according to the U.S. Joint Intelligence Committee. Daily summary dated 14 January 1942

An item reported that the Japanese landing at Kema, Roemba and Menado, northern Celebes, Dutch East Indies was supported by an aircraft carrier, cruisers and destroyers. Dutch aircraft hit two cruisers. Japan controlled the Straits of Makassar and the sea lanes for 300 miles south from Mindanao isolating the Phlippines.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary dated 14 January 1942 No. 35.