Police said they found a 9mm pistol with one round of ammunition at Assou Canal, Gros Islet, on Wednesday after a young man fled when they approached him.
The young man was sitting by a shed and escaped into nearby bushes, according to information.
Police found the pistol with the one round of ammunition under a galvanized roofing sheet.
The officers were conducting an operation in the community when the incident occurred.
While engaged in their operation, the officers also investigated a report that while they were in Monchy, Gros Islet, an occupant of a motor vehicle, threw a firearm out the window.
However, a search did not turn up any weapon.
Headline photo: Police officer takes part in operation (Stock image)