He visits the injured man in hospital and vows to bring the perpetrators to justice
Speaker Shirin Sharmin Chaudhury administered the oath at her office on Sunday morning.
The seat fell vacant after Hiron’s death on Apr 9.
Afroz won the June 15 by-poll by a huge margin, securing 183, 629 votes against her rival’s 6,136 votes.
Parliament Secretariat's Senior Secretary Md Ashraful Moqbul moderated Sunday’s ceremony.