The two-part test for lawful arrest under s 99(3) LEPRA requires both honest subjective belief that arrest is necessary for a s 99(3) purpose AND that the belief was formed on objectively reasonable grounds, assessed by reference to information known or reasonably capable of being known to the officer. A decision to arrest made before attending the suspect's premises for reasons of administrative convenience negates the requisite state of mind. The phrase 'domestic incident' does not satisfy the s 201(1)(c) requirement to inform the arrested person of the reason for arrest because it does not identify conduct or convey in any meaningful way the charge likely to be laid. An officer's ignorance of an alternative non-custodial power (such as s 89 of the Crimes (Domestic and Personal Violence) Act 2007) does not, without more, constitute conscious wrongdoing in contumelious disregard of rights sufficient to support exemplary damages.
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