17-year-old Md Israfil and 15-year-old Robeya Khatun were married about eight months ago
They are ‘Rinku’, 28, Rejaul Hasan, 35, and Mim Al Mahmud Istiaque, 36.
Rinku was shot while the group hurled a petrol bomb at police.
Boalia Police Station OC Alamgir Hossain said the incident occurred near the Dhaka Bus Stand of the Shiroil area on Sunday morning.
Police have also recovered two guns, a steel rod, and a knife from them.
Alamgir told reporters the accused hurled petrol bombs at two buses at the bus stand.
They hurled another bomb at the police when the locals and police had chased them.
Police fired at the three men and arrested them, while one of them was injured in the firing.