The Anti-Terrorist Squad arrested Ali on January 25 from the Gangnahar area in Rookree, Uttarakhand, where he was living under the name of Abid Ali, the police said.
The arrest was carried out just as he was about to send a courier to Amir Rathor, an ISI officer, in Dubai. The envelope contained maps of Roorkee cantonment area.
Some maps of cantonment areas, a laptop, a pen-drive and other documents were recovered from Ali, DIG Kumbh Alok Sharma said.
The ISI agent fell in love with Muskan, a
married woman of Kakroli area of Muzaffarnagar district in Uttar Pradesh. Later, when Ali shifted base to Roorkee last year he married Shaista, daughter of Kabir Khan. But few months back, Ali returned to Muskan and was living with her, police said.
In between, Ali had relationships with a couple of more women.
Through his love affairs, Ali had tried to gain confidence of locals in both Muzaffarnagar and Roorkee.
Ali stayed under various names in different places like Muzaffarnagar, Meerut, Lucknow and Bikaner. Police teams are being sent to these places to find out any possible hideouts of the agent and his associates. Significantly, Ali has been arrested from Haridwar district where Maha Kumbh Mela is presently underway.