The police sent a text message: hurry home and find me if you need anything. Is it true?/You don't say.

No, according to national regulations, the police don't send text messages to people. The police sent a text message saying to go home quickly. If something is not true, the police will only call and don't believe it. The police refers to the police organs and their policemen set up by the state and its rulers according to the will of the state and the ruling class and certain standards.