Al-Mustapha, a former Chief Security Officer to the late Head of State, Gen Sani Abacha, spoke on the Voice of America (VOA) Hausa service whilc reacting to the allusion made to him in the letter.
Obasanjo alleged that he (Al-Mustapha) was released from prison to help the president train snipers to assassinate political opponents.
Admitting that Obasanjo did not mention his name, he said he knew that the allusion was about him. “If he has anything to say on me, he should mention me directly or even challenge me and not make allusions,” he said.
Al-Mustapha denied the allegation adding: “I read Obasanjo’s letter and subsequent comments by Nigerians, I would have responded immediately, but I was away in India receiving treatment.
“Perhaps it is Obasanjo and his cronies that are planning what he was insinuating.”
Al-Mustapha added: “From 1974 to the present, a lot of things are buried with all sorts of lies, but all would be revealed one day.
“I urge everyone to pray for Obasanjo to accept my challenge for a public debate so that the truth will come out,” he said.