Japanese mining the Visayan and Sibuyan seas according to the U.S. Joint Intelligence Committee. Daily summary dated 26 March 1942

An item reported the mine laying by the Japanese in the Visayan and Sibuyan seas, Philippines to obstruct the inter-island shipping.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 106 dated 26 March 1942