Chittagong: Chittagong Metropolitan Police (CMP) has slapped a travel ban on five suspected killers of police super Babul Akhter’s wife Mahmuda Khanam Mitu.

CMP Commissioner Iqbal Bahar told UNB on Wednesday that they wrote letters to the authorities of different airports and land ports requesting them to take measures to bar the five murder suspects—Musa, Nabi, Rashed, Kalu and Shahjahan—from leaving the country.

He said they imposed the travel ban as two other suspects who are already in custody divulged their names during interrogation.

Earlier on 26 June, two murder suspects—Wasim and Anwar, believed to be professional killers hailing from Rangunia of Chittagong—reportedly confessed before a court to their involvement in the killing.

Acting on their information, police arrested two more suspects—Ehtesham Haque Bhola, 38, and Mohammad Monir, 40—from Bakalia of the city early Tuesday.

Police claimed that Wasim directly opened fire on Mitu during the murder while Bhola supplied the firearm that was used for the crime.

Miscreants gunned down SP Babul's wife Mahmuda Khanam at GEC intersection of the port city of Chittagong on the morning of 5 June while she went there to drop her son Mahir Akhter, 7, for his school bus.