Prime Minister Sheikh Hasina on Sunday given directives to the authorities concerned to arrest those involved in hurling petrol bombs in the vehicles that claimed a number of lives.
The Premier gave the order while visiting a burn injured police member who is undergoing treatment at the Square Hospital in the capital.
She also enquired about the treatment of constable Shamim.
Inspector General of Police Shahidul Haque was also present.
Constable Shamim among five police men received burn injuries when miscreants hurled a petrol bomb at a bus, carrying law enforcers, near Matsya Bhaban under Ramna Police Station on Saturday night.
Shamim was first admitted to Dhaka Medical College Hospital. Later, he was shifted to Square Hospital following deterioration of his condition.