Pune: Indian Mujahideen co-founder Siddibappa alias Yasin Bhatkal has been remanded to police custody till March 28 by Special Judge S D Darne of Shivajinagar District and Sessions Court in Pune in the German bakery blast case.

The Maharashtra Anti-Terrorism Squad (ATS) officials requested his custodial interrogation to find out the way in which 'Bhatkal' communicated with other absconding accused involved in various bomb blast cases across India including German Bakery blast case on February 13, 2010.