The judge's resignation takes effect only three months before he's due for his statutory retirement in March 2018.
According to the letter dated December 6, 2017, the judge's retirement from the bench takes effect from Wednesday, December 6, three months before he's due for his statutory retirement in March 2018.
His one-paragraph letter was received at the Office of the Acting Chief Judge of the Federal High Court in Abuja without a stated reason for the action.
According to a report by The Punch, the judge had previously written a notice of retirement dated September 25, 2017 to the National Judicial Council, but it was not acted upon.
Justice Ademola was one of the judges that were investigated and arrested by the Department of State Services (DSS) after a raid on his house in October 2016 on suspicion of corruption.
The judges arrested during the 12 hours raid on Friday, October 7, also included Justices Sylvester Ngwuta and John Okoro, both of the Supreme Court.
Operatives recovered the sum of $800,000 from the simultaneous raid that shocked the nation and dominated headlines.
The DSS disclosed that the sum of N54 million, $171,779, 4,400 Euros, 1,010 Rupees, and 80 pounds was found in the residence of Justice Ademola alone.
In a letter to then-Chief Justice of Nigeria (CJN), Mahmoud Mohammed, Justice Ademola alleged that his ordeal was masterminded by the Attorney-General of the Federation (AGF), Abubakar Malami, claiming, "What is more intriguing in this whole episode, is that I see it as a vendetta/revenge from the Hon. attorney general of the federation, Abubakar Malami; whilst I was in Kano between 2004 and 2007 as a federal high court judge, he was involved in a professional misconduct necessitating his arrest and detention by my order."
He also made claims that he was being targeted for granting bail to the former National Security Adviser (NSA), Sambo Dasuki, as well as ordering the release of the Indigenous People of Biafra (IPOB) leader, Nnamdi Kanu, to the displeasure of the DSS.
Justice Ademola was later suspended, alongside other suspected judges, by the NJC on Thursday, November 3, 2016, in Abuja at the end of its 79th Council meeting headed by Justice E. O. Ayoola
Justice Ademola and his wife were arraigned on December 13, 2016, accused of 'corruptly' receiving a total sum of N248,101,300 and $520,000 as gratification from law firms and others between 2013 and 2016.
Justice Jude Okeke of the FCT High Court, Maitama dismissed the case due to the failure of the prosecution to provide evidence to prove the allegations were correct.
On Saturday, June 3, 2017, the NJC made the determination to recall the judges as the Federal Government had failed to prosecute some of them.