The anti-terrorism squad of Nepal police arrested the suspect of the Mumbai blasts after noticing suspicious movement of the detained person.
Media reports said that Zahir was found to have had phone conversations about the Mumbai blasts as well as sent text messages from his mobile phone.
Mumbai was shattered on Jul 13 when three simultaneous explosions rocked the dream city. Opera House, Zaveri Bazar and Dadar became the main targets of the terror attack which killed at least 24 people so far and left 129 people injured.
However, no terror outfits had claimed the responsibilities of the gruesome militant attacks, though Indian government named Indian Mujaheedin (IM) and some other terror groups as suspects.