Japanese transports sighted off Patani, Malaya according to the U.S. Joint Intelligence Committee. Daily summary dated 21 December 1941

An item reffered to a tiding of the British Admiralty London dated 19 December reporting that 11 large Japanese transports were sighted off Patani, Malaya involved in continuous landing activities.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 11 dated 21December 1941.