What is the ruling on supplicating against a biological brother who commits grave sins and threatens those around him with murder?

It is permissible to supplicate against this man for his profligacy and disobedience. It is also permissible to report him to the authorities because he does not desist from his criminality, his use of drugs, his possession of weapons, and his threats of murder. Imprisonment is most suitable for someone like him, for his own protection and the protection of others.