The flight IC-814 en route to Delhi from Kathmandu with 180 people on board was hijacked on 24 December. The hijackers had seized the plane 40 minutes after it took off from Kathmandu. [break]
According to BBC, he was arrested from the south-eastern Kishtwar district.
BBC further said quoting the police that Ahmad had returned recently from Pakistan via Nepal and was "recruiting youth for militant attacks".
The hijacked plane was flown to Kandahar in Afghanistan, from where the hijackers negotiated the release of militants fighting in Kashmir.
India had then released three Kashmiri militants in exchange for the passengers. None of the five armed hijackers was caught.
New route to reach Annapurna Base Camp