The Kenyan minister allegedly taped trying to block a corruption inquiry has said he will not resign.
Kiraitu Murungi was justice minister during the alleged scam
Energy Minister Kiraitu Murungi says the tape is truncated and unclear. He has denied any wrong-doing.
The recordings were allegedly made by former top anti-corruption investigator John Githongo, who has fled to the UK.
A team of Kenyan MPs is flying to the UK to question Mr Githongo about his allegations, which have threatened the Kenyan government.
President Mwai Kibaki was elected in 2002 on a pledge to end the corruption which had seen donors cut off aid.
The BBC's Adam Mynott in Nairobi says Mr Murungi and other ministers and officials have come under growing pressure from the Kenyan public and media to stand down.
Mr Murungi, who was justice minister during the investigation, says he has sent a list of 36 questions to the Kenyan High Commission in London where the Kenyan Parliamentary Public Accounts Committee is shortly to start questioning Mr Githongo about the corruption allegations.
Mr Murungi indicated he would make a comprehensive response to the issues raised once he had studied the findings of the Public Accounts Committee.
On the tape, a man Mr Githongo says is the minister is heard telling him that the loan is owed to a businessman with links to powerful politicians and that if he goes slow on his investigation the businessman will also go slow.
"The minister of justice was telling me that if I eased off my enquiries then my father's loan matter would be made to go away," Mr Githongo said.
Mr Githongo also says he told President Kibaki about the corruption, but the president failed to act.
President Kibaki on Thursday pledged that he and his government would take "expeditious and decisive" action in the fight against corruption.
Mr Githongo says government money was being paid to companies that did not exist or to others which were massively overpricing their contracts.
The scandal, known as the Anglo Leasing affair, has cost the Kenyan exchequer millions of dollars, according to Mr Githongo's investigations.
He believed the finance was being given to business figures close to the government, who were then re-directing some of it back to the ruling elite for political campaigning.