New Delhi: Uttar Pradesh legislator Amarmani Tripathi, the main accused in the Madhumita Shukla murder case, underwent a lie-detector test on September 29, CBI said.

The former minister in Mayawati Cabinet gave in writing to the CBI on September 28 evening his acceptance to undergo the test.

The polygraphy test would help the sleuths in finding the wrong statements that he would have made during his nine-day custody with the CBI.

Tripathi was first explained the significance of the polygraphy test and the method with which it works before the hours-long quizzing by senior officials of the CBI began, the sources said.

PTI