Not true, a public prosecutor can, not a police officer. A police officer may request the data on behalf of a public prosecutor. Every canton is organized somew

Not true, a public prosecutor can, not a police officer. A police officer may request the data on behalf of a public prosecutor. Every canton is organized somewhat differently, so it depends on the canton who does the actual work in the end. The letter often states the case number opened by the public prosecutor. Depending on the organization, the public prosecutor will ask the police in writing what to request.