A special court in New Delhi today sent Bahadur Ali alias 'Saifullah', a Pakistani national allegedly working for terror outfit Lashkar-e-Taiba (LeT), to National Investigation Agency's (NIA) custody till next Wednesday. <br/><br/>The agency had said his custodial interrogation was required to unearth the larger conspiracy and that it needed to decode the diary writings recovered from him. According to court sources, Ali was produced before the court after expiry of his NIA remand.<br/><br/>The court allowed the NIA's plea to quiz Ali and also handed over the diary, which was earlier sealed, to the probe agency. <br/><br/>NIA had yesterday cited Ali's confessional video to claim that unrest in the Kashmir Valley was being orchestrated by Pakistan-based LeT. Ali was arrested from a village in North Kashmir on July 25 and the army had recovered three AK-47 rifles and two pistols from his possession.