Peter Munya, Sicily Kariuki and Joe Mucheru deny alleged plot to eliminate DP William Ruto.
They also decline to record statements with DCI until DP makes formal complaint.
Mr Munya, Mr Mucheru and Ms Kariuki denied any plan to eliminate the DP.
Three Cabinet Secretaries from central Kenya were on Monday questioned by detectives after Deputy President William Ruto accused them of plotting to eliminate him.
ICT Cabinet Secretary Joe Mucheru, Mr Peter Munya (Trade and East African Community) and Sicily Kariuki (Health) presented themselves at the Directorate of Criminal Investigations (DCI) headquarters after Dr Ruto filed the complaint on phone.
According to Mr Munya, who spoke on behalf of the other two ministers, Dr Ruto claimed the CSs, some principal secretaries, heads of parastatals and other government operatives from Mt Kenya were holding secret meetings to plan to kill him.
The plot, Dr Ruto allegedly told DCI, was part of a wider scheme to ensure he does not take over after President Uhuru Kenyatta in 2022 when his second and final term ends.
The meetings, according to sources at DCI, were held at La Mada Hotel on Thika Road, quoting Dr Ruto’s brief.
Mr Munya, Mr Mucheru and Ms Kariuki arrived at the DCI headquarters on Kiambu Road a few minutes after 7am following their summonses alongside PSs Andrew Kamau (Energy and Petroleum), Joseph Njoroge (Energy) and Andrew Wakahiu (head of the presidential delivery unit).
However, after more than two hours of questioning, the ministers emerged and told journalists that they had not recorded any statement because Dr Ruto had not made any formal complaint.
“There is no written allegation recorded in the OB and no complainant has written any report,” Mr Munya said.