30-year-old Zabiuddin alias Abu Jundal and Riyasat Ali, was arrested on his arrival at the Indira Gandhi International Airport by Delhi Police on June 21, police said.
He was remanded to police custody for 15 days by a Delhi court on the same day.
Zabiuddin had taught Hindi to 10 Lashker-e-Taiba terrorists that carried out the Mumbai attacks in 2008. A resident of Georai area of Beed district in Maharashtra, he had managed to give a slip to the Mumbai Police when an arms consignment in Aurungabad was seized in 2006 and left for Pakistan.
Along with five others, he was was present in the 'control room' set up in Pakistan and was heard instructing terrorists who were engaged in a fight with NSG commandos at Nariman house, officials associated with the probe said.
They added that Zabiuddin had told Lashker terrorists to convey to the media that the "attack was a trailer and the entire movie was yet to come".
In the intercepted tapes, Ansari was also heard using typical Hindi words like "prashasan" (administration) and directing the terrorists to conceal their Pakistani identity and to identify themselves as Deccan Mujahideen hailing from Toli Chowk in Hyderabad.
More From This Section
During interrogation, Zabiuddin gave a deep insight into the situation at 'Karachi control room' monitoring the Mumbai attack.
His presence was also stated by Ajmal Kasab, the lone terrorist arrested during the Mumbai attack, in his deposition before a special court in Mumbai. He told the court that one person by the name of Abu Jindal had tutored 10 terrorists on how to speak Hindi.
India had also secured an Interpol Red Corner notice against him in which he was accused of crimes involving the use of weapons, explosives and terrorism.
Union Home Minister P Chidambaram said, "Sayed Zabiuddin, we believe is a person who goes by the pseudonym Abu Jindal. He has been apprehended and has been remanded to the custody of law enforcing agencies." MORE