Suspected of fraud, the police should file a case to recover losses. If the police do not file a case, you have the right to ask them to issue a notice of non-filing and tell them the reasons for not filing a case. The notice of not filing a case shall be served within seven days. If it is considered that the public security organ has not filed a case for investigation and filed a case with the procuratorate, the public security organ shall decide to file a case within 15 days after receiving the notice of filing a case, and serve the decision on filing a case on the procuratorate. Article 266 of the Criminal Law of People's Republic of China (PRC) stipulates that whoever defrauds public or private property in a relatively large amount shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall also or only be fined; If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and shall also be fined; If the amount is especially huge or there are other especially serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than 10 years or life imprisonment, and shall also be fined or confiscated. Where there are other provisions in this Law, such provisions shall prevail.