Japanese were planning an attack on the Dutch East Indies according to the U.S. Joint Intelligence Committee. Daily summary dated 8 January 1942

An item referred to the Australian War Department reporting that the Japanese were planning an attack on the Dutch East Indies using the ships and military available at Davao, Mindanao, Philippines.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 29 dated 8 January 1942