A National Security Guard team has collected samples from the site of the blast here that claimed 11 lives.

The four-member research team of NSG’s National Bomb Data Centre arrived here on Wednesday night and collected samples from the blast site at Koregaon Park area where the German Bakery was located.

Pune Police Commissioner Satyapal Singh said while the investigators were yet to establish the nature of trigger mechanism, the evidence collected so far did not rule out the use of remote control device in the blast.