A man sustained burn injuries when the miscreants hurled a petrol bomb at a passenger bus in Tejgaon area in Dhaka.
The injured Ripon, 18, son of Nasir Gazi, is a worker of a press in Fakirapool in the capital.
The incident took place at 8:30pm on Saturday near Tabbet bus stand area when he was coming to his workplace from Gazipur.
He was admitted to Dhaka Medical College Hospital (DMCH) at 9:15pm with 5-6% burn injuries, said Muzammel Haq, in-charge of the hospital.