The Crimestoppers posters will be put on display across Northampton
Migrants have been encouraged to report criminal activity in Northampton with the use of Polish language posters.
Crimestoppers made the foreign language posters to reassure the Polish community that information relating to crime can be reported anonymously.
Working with police, the charity said it aimed to reassure all residents any issues they may have would be tackled.
This runs alongside Northamptonshire Police's language line - enabling foreigners to talk to the force.
"We will be putting up these posters in areas where the Polish community tends to congregate such as clubs, shops and places of worship," said Insp John McKinney, of Northamptonshire Police.
Martin Lawrence, of the Northamptonshire Crimestoppers Board, added: "We provide a telephone service 24 hours a day, seven days a week for people to report information about crime anonymously.
"We ask the Polish community to just tell us what you know, not who you are."