U.S. immigration agents made “demonstrably false” statements to local police during a traffic stop last month, potentially committing a crime in the process, a Utah mayor alleged in an email urging the agency to investigate its own officers.

A recent traffic stop by Immigration and Customs Enforcement agents in Salt Lake County is under scrutiny after local police say they were given inaccurate information by the federal officers. On Jan.

Police said they contacted ICE officials about concerns over “the inaccuracies and inconsistencies in their agents’ statements.”