The well known singer-songwriter was released from New Bell Prison in Douala. There were concerns that Mbanga would be detained beyond the expiry of his sentence due to the Cameroonian government's fear of how people would react to his release in the run-up to presidential elections due to take place in October 2011. Mbanga is a member of the opposition party Social Democratic Front (SDF). However, despite initial claims by the prison authorities that he was merely being transferred to another detention centre, Mbanga was released one day earlier than anticipated and returned to his home in Mbanga City.
Mbanga was arrested in Mbanga City on 9 April 2008, accused of instigating mass demonstrations and strikes against the high cost of living in Cameroon which had taken place two months before. However, according to the Media Foundation for Western Africa (MFWA), his arrest stemmed from a song he wrote entitled "Constipated Constitution" which warns President Biya of the dangers of the constitutional amendments. The Constitutional Amendment Bill, which was adopted on 10 April 2008, allows an unlimited number of presidential mandates, as well as granting the president immunity for any acts committed while in office. President Biya has been in office since 1982.
On 24 September 2008, Mbanga was found guilty as charged and sentenced to three years in prison and hefty fines. Mbanga appealed the sentence but his final appeal before the Supreme Court had still not been heard by the time he was released. Mbanga faced extremely harsh and overcrowded conditions in prison and developed health problems as a result, including typhoid fever and respiratory problems. In June 2010, a group of US lawyers working with the campaigning group Freedom Now submitted Mbanga's case to the UN Working Group on Arbitrary Detention.
In a local media interview following his release, when asked what he plans to do now, Mbanga commented: "Power creates monsters. If, because of a little seller of tomatoes the regime fell in Tunisia, I think that a singer can also change things in Cameroon. The Haitian President is a singer." However when asked if he is planning on standing for election in October, Mbanga replied that he is not, and continues: "I think that such duties are not made for a normal man. Those who have understood the delicacy and the demands of these duties stay in power for a maximum of eight years. Because God only knows that after eight years, that man is no longer normal. But when instead of that you decide to stay for 29 years, 40 years, I have to ask myself why".
Mbanga added that he has written a book entitled "Cabale politico-judiciaire ou la mort programmée d'un combattant de la liberté" (Politico-judicial cabal or the planned death of a freedom fighter), for which he is currently seeking a publisher.
According to Freemuse, which has campaigned for Mbanga's release along with PEN International, it is feared that the songwriter may face ongoing security concerns. Prior to his release, Mbanga said he feared for his safety and that of his family and that he was considering going into exile.