Police officers seeking to forcibly enter a private dwelling to effect an arrest must announce a lawful reason for entry — such as an intention to arrest — not merely a desire to 'speak to' the occupant. A request to speak does not state a basis for entry without consent and the occupant is entitled to refuse it. The 'cause' or 'purpose' announced must be one that, if rejected, authorises entry without consent. An announcement of intention to arrest, followed by a sufficient interval to infer non-cooperation, would satisfy the proper announcement requirement.
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