Two teenage boys were among four people arrested in Morvant on Sunday after police found two firearms and 20 rounds of ammunition in a car.
The arrests were made during an operation conducted by North Eastern Division Task Force officers between 11 a.m. and 3 p.m. on September 13.
Police said the operation, dubbed Operation Resolute Shield, focused on the Second Caledonia, Vegas, Cipriani Avenue, Chinapoo and Pitch Road areas.
During the exercise, officers went to an area in search of a red Hyundai believed to have been used in a robbery earlier that day.
They said they observed the vehicle and also saw a brown Nissan Sentra with four occupants nearby.
The occupants and vehicle were searched, police said, resulting in the seizure of a Smith and Wesson revolver containing four rounds of .38 ammunition and a Beretta PX4 pistol fitted with a magazine containing 16 rounds of 9mm ammunition.
The four people arrested were two boys, aged 15 and 16, and two men, aged 20 and 33. All four are from San Juan.
Police also seized both vehicles as the investigation continues.