Complex sentence: The accused duo were brought to the Directorate of Forensic Sciences in Gandhinagar city in order to undergo brain mapping and polygraph tests on 4 January 2007 and narco analysis five days later.
Split into simpler sentences: The accused duo were brought to the Directorate of Forensic Sciences, Gandhinagar city for undergoing a series of medical tests. Brain mapping and polygraph tests were conducted on 4 January 2007 and narco analysis five days later.