Explanation:

2 only

A person can be arrested only after he or she has reportedly committed some offence: This statement is incorrect. A person can be arrested on various grounds, including suspicion of having committed an offense, as provided under the legal procedures outlined in the Criminal Procedure Code (CrPC). Arrests are not contingent on the person having reportedly committed an offense.

A person cannot be punished for the same offence more than once: This statement is correct. The principle of double jeopardy, also known as the rule against double jeopardy, is a fundamental right that protects individuals from being prosecuted or punished more than once for the same offense.