Axis forces lying mines several strategical positions in the Mediterranean staccording to the U.S. Joint Intelligence Committee. Daily summary dated 8 January 1942

An item reported that the enemy intended or already laid mines off Malta, Tripoli, Benghazi, Tobruk, Navarino and Athens.

Source

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