Another police pistol magazine has been lost in Winnipeg.

Winnipeg Police say a pistol magazine with 15 bullets in it was lost some time between 10 last night and 1 this morning.

Public information officer Constable Jay Murray says the officer who lost the magazine, and others, tried to re-trace their steps but couldn't find the missing item.

"The officer did respond to a number of calls throughout that part of his shift, but I'm not entirely sure about where it went missing," Murray told reporters this morning.

Police are asking anyone who locates the magazine to turn it into them, or contact them on the non-emergency line.

Another Winnipeg Police pistol magazine containing ammunition was reported missing last month, lost some time between December 28th and January 2nd. Both of the lost magazines are plastic and black in colour.