Choudhary, a resident of Pune, was arrested by Mumbai Police in September 2008, before being taken into the custody of Delhi Police June 11 for his alleged role in the serial blasts.

He is also allegedly involved in the twin blasts in Hyderabad Aug 25, 2007.

According to police, Choudhary had joined Mansoor Asghar Peerbhoy, Indian Mujahideen's media cell chief, and other accused Mobin Kader Sheikh and Asif Bashir Sheikh by hatching a criminal conspiracy to hack a wi-fi system to send mails to media organisations.