An act which causes injury to the property of another, and which is done without his consent, is unlawful unless it is authorised or justified or excused by law.
It is immaterial that the person who does the injury is in possession of the property injured or has a partial interest in it.
A person is not criminally responsible for any injury caused to property by the use of such force as is reasonably necessary for the purpose of defending or protecting himself, or any other person, or any property, from injury which he believes, on reasonable grounds, to be imminent.
Section 440 of the Criminal Code Act in Nigeria
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