Home Minister Asaduzzaman Khan on Monday said that those who are involved in the crime will be brought to book irrespective of their identities.
"If anyone commits a crime, he/she will be brought under law, no matter who the person is," he told reporters at his Dhanmondi residence when they sought comment about the attack on a Navy official.
A case has been filed against Irfan Selim, son of MP Haji Selim, for "attacking" Lieutenant Wasif Ahmed Khan of Bangladesh Navy at Dhanmondi in the capital on Sunday night.
Lt Wasif filed the case at Dhanmondi Police Station against four named accused, including Irfan Selim, also councillor of ward-30 of Dhaka South City Corporation (DSCC), and several unnamed accused.
The three other accused are AB Siddique Dipu, 45, Md Zahid, 35, and driver Md Mizanur Rahman, 30.
According to the case statement, a private car hit Lt Wasif's motorcycle near Labaid Hospital around 7:45pm when he and his wife were returning to their Mohammadpur residence from Nilkhet.
Later, some people came out of the car and physically assaulted the navy official. They also verbally abused his wife, the navy official alleged.
Meanwhile, the incident went viral on social media.
Md Ikram Ali Mia, officer-in-charge of the police station, said the driver of the car, Mizanur, was detained from the spot and shown arrested in the case.
Later, members of Rapid Action Battalion (Rab) conducted a drive at the Old Dhaka residence of Haji Selim and detained his son Irfan and Irfan's bodyguard Zahid on Monday afternoon.
Meanwhile, a Dhaka court on Monday placed Mizanur Rahman, driver of MP Haji Selim, on one-day remand in a case filed over the assault.
Dhaka Metropolitan Magistrate Abu Sufiyan Mohammad Noman passed the order when Dhanmondi Police Station's Inspector Ashfaq Rajib, also the investigation officer of the case, produced him before the court in the afternoon, seeking a five-day remand.