Bangalore, Apr 10: Former chief of the banned students Islamic movement of India Safdar Nagori has revealed some "very important" information on the outfit's network during a Narco analysis test done on him at the Forensic Science Laboratory (FSL) here.

"While Safdar Nagori was subjected to the Narco analysis test yesterday, two other activists, Kamruddin and Pervez were subjected to Narco tests today", FSL director B M Mohan told reporters.

"During his four-and-a-half-hour Narco test, Safdar Nagori has revealed some very important information on the SIMI network spread across the country", he said without elaborating.

"All the three who were brought here by the Madhya Pradesh police on March 31, have already undergone polygraph tests", he said, adding the trio might be subjected to brain mapping "sometime later".

Nagori and 12 other top SIMI activists were nabbed by the Madhya Pradesh police on March 27 and were remanded to police custody till April 11.