The want of jurisdiction in the magistrate to try and determine the complaint originally made by the defendant against the plaintiff, and the invalidity of the commitment of the plaintiff for contempt, are fully settled in Piper v. Pearson, 2 Gray, 120. In that case, the proceedings before the magistrate were similar to those in the case at bar.
The only question therefore arising in this case is, whether, upon the facts proved, the defendant is liable as a trespasser. In deciding this question, it is unnecessary to determine upon the regularity of the form of the warrant of commitment. This is not an action against an officer for serving the warrant, or against a person acting by or under his authority or sanction. If it were, it would be essential to consider whether the war
But such is not the rule applicable to strangers or third persons, who are not required, in the exercise of a public duty, to assume the responsibility of executing legal process. If they interfere of their own motion, without authority or command 'from the officers of the law, to cause a writ or warrant to be enforced, they act at their peril; and if the process, though regular on. its face and apparently good, was unauthorized, or was issued by a tribunal having no jurisdiction, or acting beyond the scope of its power, they are liable for the consequences arising from the enforcement of unlawful process. It is upon this ground, that a party is held responsible, at whose suit execution is made, when the officer serving it incurs no liability. The rule is, that if a stranger voluntarily takes upon himself to direct or aid in the service of a bad warrant, or interposes and sets the officer to do execution, he must take care to find a record that will support the process, or he cannot set up and maintain a justification. Barker v. Braham, 3 Wils. 376. Parsons v. Loyd, 3 Wils. 341. Bryant v. Clutton, 1 M. & W. 408. West v. Smallwood, 3 M. & W. 418. Codrington v. Lloyd, 8 Ad. & El. 449. Carratt v. Morley, 1 Ad. & El. N. R. 18. Green v. Elgee, 5 Ad. & El. N. R. 114.
In the present case, the defendant was a volunteer in urging the officer to serve a void warrant upon the plaintiff; and, under
