A man who died after setting himself on fire in Tokyo's Hibiya Park on March 30 left a memo detailing plans for a terrorist attack carried out in 1972, sources said Saturday.

The attack was carried out by the Japanese Red Army at Lod airport in Tel Aviv. Authorities obtained the memo from among the man's belongings and are analyzing the contents for further information on the activities of the Japanese leftist extremist group.

On May 30, 1972, three members of the Japanese Red Army fired machine guns indiscriminately in the arrival lobby of Lod airport. A shootout with Israeli police left 26 people dead and more than 70 injured.