Rapid Action Battalion (Rab) detained two suspected criminals with a foreign pistol, a magazine and four bullets from Mohammadpur's Nurjahan Road area on Tuesday night.
The detainees were identified as Md Maruf Hasan, 22, and Md Abdur Rahman Siam, 21.
They were rounded up during a raid conducted inside Qureshi Kabab and Restaurant around 11:10pm, Sanad Barua, said senior assistant superintendent of police (media) of the Rab-3.
A Rab team conducted the operation after being tipped-off that the duo had been staying inside the restaurant.
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Sensing the presence of the Rab members, the accused attempted to flee but were detained.
While searching their bodies, the foreign pistol, one magazine and four rounds of live ammunition.
During preliminary questioning, they confessed to keeping the weapons in their possession and using them to carry out various criminal activities in the area.
Legal action against the duo was underway.