Punishable offences are less than 7 years or above  7 years with or without fine or a capital punishment and important elements constituting of such arrest [of the person], the Police Officer must convinced himself that such arrest was necessary or not on following grounds;

1. To prevent that person from committing any further offence, or
2. For investigation of the committed offence, or
3. To prevent the evidences from getting destroyed, disappear tampering or manipulated
4. To prevent and protect those witnesses from getting induced or threatened by the offender
5. In certain case arrest of the person is required to produce him in the Court when his presence becomes necessary
6. The person is a proclaimed offender
7. A thief or a suspected thief in whose custody stolen properties are found or suspected to be in his possession
8. The person obstructs the duty of the Police Officer or who has escaped or attempt to escape from the lawful custody
9. Deserter from the Armed Forces
10. Any unlawful act commissioned in offshore or onshore wherein the Government Protocol like extradition required to be followed
11. Released convict and committed any breach against any other Police Authorities and whose detention is required by those authorities