Dayanand Pandey, one of the accused in Malegaon blast case, underwent a narco analysis test at the Forensic Science Laboratory (FSL) in Bangalore on Friday, FSL sources said.
Pandey was subjected to the narco analysis test for about four hours, the sources told PTI.
FSL is yet to decide whether to subject Pandey to other tests like polygraph and brain mapping, they said.
Pandey was brought to the city by Mumbai Anti-Terrorist Squad (ATS) in the morning and taken straight to FSL for the test under heavy security.
Ten persons, including Lieutenant Colonel Srikant Prasad Purohit, and sadhvi Pragya Singh Thakur, have been arrested so far for their alleged involvement in the September 29 Malegaon blast.
Two out of the ten accused--Purohit and Ramesh Upadhayay, were subjected to narco test here on November 10.
Arrested activist of Abhinav Bharat Sudhakar Chaturvedi was also subjected to narco test on November 18. Police were probing if he had any links with Malegoan blast accused.