In some offences the police must wait for the order of a magistrate before investigating and arresting the accused. These offences are called as?

non cognizable offences. cognizable offences bailable offences non bailable offences

non cognizable offences.

Cognizable and non-cognizable offences: Certain offences are so serious that any police officer can investigate and arrest an accused person without obtaining a warrant from a court. For example, murder. These are cognizable offences. In other cases, such as criminal defamation, the police must wait for the order of a magistrate before investigating and arresting the accused. These are non cognizable offences.