It is the first successful such prosecution since a Nigerian woman challenged her former master in the Court of Justice of the West African regional body Ecowas six years ago.
The club's headquarters is in Nigeria, which, on some counts, provides a third of the cash for Ecowas and a big chunk of its peacekeeping troops.But this makes it hard for the other ECOWAS members to criticise Nigeria.
Maimuna Abdulmumini, 22, accused of burning her husband to death as a teenager, remains in prison today despite the Economic Community of West African States (Ecowas) Court of Justice ruling in June 2014 that the decision by a court in the north of the country to impose the death penalty was a violation of her fundamental rights.
Avocats Sans Frontières (ASF), who filed the case with the Ecowas court and has campaigned for Abdulmumini's release for over a year, add that "it would be unacceptable for Maimuna Abdulmumini to remain on death row".
Last year, Amnesty campaigned successfully for the release of Thankgod Ebhos, a Nigerian man who spent 19 years on death row and was seconds away from being executed before an intervention by the Ecowas court.
Despite a number of false starts, Kaberuka is "very confident" that regional blocs such as the East African Community EACC) and the Economic Community of West African States (Ecowas) will realise long-held ambitions to tighten political unions and merge into a single market.
When the west African regional group known as ECOWAS held a conference of health ministers last month in Ghana's capital, Accra, the delegate from Sierra Leone (now sacked) could not travel from Freetown.
But the final decision was taken by Nigeria, current chairman of the West African Economic Community (ECOWAS), which brokered the peace agreement and provided the backbone of the peacekeeping force.Nigeria says the poll must be held soon to maintain the momentum for peace.
Some Malians want troops under the aegis of the Economic Community of West African States (ECOWAS) to come in.
In Liberia, a Nigerian-led ECOWAS force secured a ceasefire and an election.
Some ECOWAS members are not keen on the CFA franc and its French guarantee, which they see as neo-colonial.
