The injured, all residents of Bhola Sadar upazila were admitted at Bhola General Hospital.
The bus coming from the opposite direction hit two auto-rickshaws, killing the three on the spot.
The bus was seized but the driver escaped. Meanwhile, an angry mob blocked the Charfashion-Bhola regional road for at least an hour. Police later took control of the situation, Bhola Sadar Police Station Officer-in-Charge Enayet Hossain said.
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