The court on Friday upturned the death sentence passed on the duo by a Lagos High Court over their involvement in the murder of Alhaja Kudirat Abiola on June 4, 1996.
Al-Mustapha was the former Chief Security Officer to the late Head of State, Gen. Sani Abacha, while Shofolahan was an aide to Kudirat, wife of the acclaimed winner of the 1993 presidential election.
Abiola won the election on the platform of the Social Democratic Party.
The appellants were set free from the Kirikiri Prisons in Lagos at about 5.30pm on Friday after spending over 14 years in detention for their alleged involvement in the murder of Kudirat.
Onitiri-Abiola told the News Agency of Nigeria (NAN) in Lagos on Sunday that the court’s decision was unfortunate.
“I feel embarrassed for the justice system of Nigeria and also feel so much pain for the children of late Alhaja Kudirat Abiola.
“How can the Court of Appeal discharge Al-Mustapha and Sofolahan, saying there is no evidence against them?
“I do know that all those who planned and carried out the assassination of Alhaja Kudirat and my husband, M.K.O Abiola, would soon receive their judgment from God,’’ she said.