Buhari made this known while speaking to newsmen at the Summit of the African Union in Johannesburg, South Africa.
The President said he was being careful in order not to make mistakes in appointing individuals, especially to key positions such as in the finance and petroleum ministries.
He said: “I don’t know why people are so anxious about ministers.
“But eventually we will have (them).
“But the main reason is that I have an interim committee, which I agreed with the former President (Goodluck) Jonathan that the ministers of the outgoing government should hand over their notes or their documents to this interim committee so that a position can be prepared for the new government to start from with clear records from ministers.
“But the ministers knew that they were going, but the technocrats, the permanent secretaries and directors and so on, they know they would remain.
“If anything goes wrong, they would be invited to explain, but unfortunately the outgoing government did not cooperate.
“So, what the committee did was to divide itself into about five sub-committees and got a resource person that was willing to come and bring the document and so they prepared and I got the report I think three days ago.
“I was waiting for this report because I would like to know what position in the government, especially in terms of finance and petroleum industry.
“So, I am not in a hurry to get ministers.
“I want to get ministers after at least I have seen the report because I don’t have to appoint a minister today and sack him the next week because this report would give me what actually happened in terms of security, economy of the country.
“And since I have to have ministers from politicians and technocrats, I wouldn’t (like to) make the mistake of getting somebody who has been involved on account of accountability.”
Buhari added that he, Jonathan and former Head of State, General Abdulsalami Abubakar, had agreed to let the former ministers hand over their notes to the interim committee he had formed.
He said the planned examination of the hand over notes had to be suspended when deposed ruling party, the Peoples Democratic Party (PDP), accused his then incoming administration of forming a parallel government.
Buhari said he actually wanted to get a platform from the former ministers on which to start from following the problem of accountability in the administration.
The President, who recalled that during his time as minister of petroleum during the Olusegun Obasanjo military regime, the Nigerian National Petroleum Corporation (NNPC) had only three accounts, said during the immediate past administration, the NNPC and the ministry of finance did not know how many accounts they had.
He described the development as improper.
Buhari also said that the emergence of Senator Abubakar Saraki as Senate President divided the All Progressives Congress (APC) in spite of the moves by the party to avert a crisis.
He said the onus was on the National Assembly to resolve the issue as it had its own criteria for choosing its officers, which was why he did not want to interfere in the exercise.
Buhari said the problem of Boko Haram had been internationalised and expressed his happiness with the support coming from Nigeria’s neighbours and the G7 in an effort to end insurgency.