A narco-analysis test on Krishna, compounder of dentist Rajesh Talwar, began in Bangalore on Thursday in connection with the Noida twin murder case.

The test is being conducted at Bowring Hospital in Bangalore. FSL officials said Krishna, who was brought in Bangalore on Wednesday by CBI sleuths, has already been subjected to polygraphic test.
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Dr Malini, Assistant Director of FSL, said brain-mapping test would be conducted on Friday.
CBI officials had justified narco-analysis test on Krishna, saying it is done to ascertain contradictions, if any, in his statements.
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