"Buhari not fighting corruption" - Obasanjo

Even though Obasanjo backed Buhari to become president in 2015, the two have since had a falling out.

Obasanjo also poured scorn on the anti-corruption campaign of the Buhari administration, noting that it's more about propaganda than actual honest work by anti-graft agencies which he said are being used to hunt down political opponents and critics.

"You can steal the whole of Nigeria, and if you belong to APC, you're safe; but you can steal N10, if you criticise Buhari and his government, even when you stole that N10 15 years ago, they'll come and ask for the N10.

"All these institutions that are meant for the running of good governance, of making Nigeria wholesome, are being abused and misused just to perpetuate Buhari in government. That cannot be the way to go," he said.

Obasanjo has been a vocal critic of the Buhari administration over the past year and has released two very public statements of discontent about the government, with the most recent one coming out earlier this week.

He accused the president this week of dragging Nigeria back to the dark days of the Sani Abacha military regime and cast doubt over his ability to preside over free and fair elections.