A friend reported fraud to the police, and the police sent him to the police station. If he did constitute fraud, he would be detained administratively. According to the law, the perpetrator who swindles public or private property will generally be detained for not less than five days but not more than ten days, and may also be fined not more than 500 yuan; If the circumstances are relatively serious, he shall be detained for not less than 10 days but not more than 15 days and may also be fined not more than 1000 yuan.
 Legal basis
 Article 2 of the Law of the People's Republic of China on Administrative Penalties for Public Security, which disturbs public order, impairs public security, infringes upon personal rights and property rights, and impairs social management, is socially harmful, and constitutes a crime in accordance with the provisions of the Criminal Law of the People's Republic of China, criminal responsibility shall be investigated according to law; If the act is not serious enough for criminal punishment, the public security organ shall give administrative punishment for public security in accordance with this Law. Article 49 Whoever steals, swindles, plunders, snatches, extorts or intentionally damages public or private property shall be detained for not less than five days but not more than 10 days and may also be fined not more than 500 yuan; If the circumstances are relatively serious, he shall be detained for not less than 10 days but not more than 15 days and may also be fined not more than 1000 yuan.