Tasiri was reported to have been one of the key persons who initiated the action of 4 June 1979 which overthrew the
Supreme Military Council (SMC) military government led by
Lt. General Fred Akuffo. He was a member of the Free Africa Movement which was led by
Major Boakye-Djan. They had been under suspicion and Baah Achamfuor whom they had recruited was actually arrested on 3 June 1979. He disclosed that he was in charge of discipline as a member of the AFRC. He stated that the destruction of the Makola Market during the AFRC rule was to help arrest indiscipline among the market women. ==Post AFRC==