Lucknow, Jun 6 : CBI today sought permission from a Lucknow court to carry out a lie detection test on former minister Raghuraj Pratap Singh alias Raja Bhaiya in connection with the killing of Kunda DSP Zia-ul-Haq three months back.
The agency moved an application in the court of special CBI judge Mirza Zeenat seeking permission to conduct polygraph test on the former food and civil supplies minister with his consent.
The agency said Raja Bhaiya has given his consent for the test.
The court has fixed June 11 as the next date of hearing on the application.
It said the former minister can lodge his objection, if any, on the application on the next date of hearing.
CBI sources in New Delhi said the purpose of this move was to ensure that no angle of Raja Bhaiya's alleged involvement is left out.
They said although CBI does not have any evidence which directly links Raja Bhaiya with the murder of the DSP, it wants to get a clear picture of his role, if any, in the case.
The sources said findings of the test would not constitute evidence in the case, but it would give inputs which can be developed after thorough probe.
The agency has already grilled Raja Bhaiya on May 15 and 16 in connection with the murder case.
Haq was shot dead on March 2 in Balipur village in Kunda area of Pratapgarh district where he had gone to probe murder of village head Nanhe Yadav.
Haq's wife Parveen Azad had accused Raja Bhaiya of conspiracy after which he had to resign from the Cabinet on March 4.