Tight security measures have been taken in all police establishments including police boxes and stations in Chattogram after Friday night's blast that injured two policemen and a child at a police box in Sholoshohor.
Police recovered bomb materials from the blast spot. The evidences have been sent to Dhaka for further investigation, Chattogram Metropolitan Police's Additional Commissioner Amena Begum said.
The explosion took place around 8:30pm inside the police box and created panic in the area, according to the witnesses.
Police's high-ups and bomb disposal visited the spot after the blast.