The polygraph test on former UP minister Raja Bhaiyya is negative, which in effect means that the CBI is likely to give Raghuraj Pratap Singh a clean chit in the murder case of Kunda Deputy Superintendent of Police Zia-ul-Haque. The CBI is expected to submit its probe report along with the results of a polygraph test done on Raja Bhaiya in a court in Lucknow today.

Haque's wife Parveen Azad had accused Raja Bhaiya of being involved in the murder case. Raja Bhaiya, who has a lengthy criminal record, had denied the allegations against him, though he was forced to resign as Minister of Food and Civil Supplies from the Akhilesh Yadav government.

Haque was killed on March 2 in Pratapgarh district where he had gone to probe a village headman's murder. An angry mob reportedly cornered him, and eight policemen who were with him allegedly abandoned him. Three bullets were fired - one killed Haque; the other two killed headman Nanhe Yadav's brother. -- NDTV