Buhari made this known on Thursday when he received leadership of organised Labour at the Presidential Villa, Abuja.
In a statement by the Special Adviser on Media and publicity, Femi Adesina, the President said “PDP has not successfully explained to the country what they did with the money.
“There were no roads, no rail, no power. They said they spent $16 billion on power, but where is the power?
“The irresponsible expenditure of that period has not been explained, and Nigerians deserve an answer on that terrible mismanagement of the country.” he said