An armed policeman has lost more than a dozen bullets while on duty in the Nottingham city area.
Police said a metal holder containing 15 bullets were lost by the officer sometime between Tuesday night and the early hours of Wednesday.
They said that, while the bullets do not in themselves represent a danger to members of the public, they could be dangerous if mistreated.
An investigation into the loss is being carried out.
The holder is black in colour and approximately six inches long.
Nottinghamshire Police have urged anyone who finds the bullets to contact them.
This is the third time the force has appealed for help from the public in finding lost bullets.