Police have discovered 205 live ammunition concealed in a toilet in a five-storey building down Bristol Street, Colombo.
Police said 176 T-56 live ammunition and 29 9mm live ammunition were among the ammunition that was seized.
The ammunition was found following information received by the Colombo Fort Police.
A sanitation worker employed at the building had discovered the ammunition and informed relevant officials.
The Colombo Crimes Division has commenced investigations into the incident.