prevent all molestation of such person or persons by any process issued by any court, judge, magistrate, or other person whomsoever. _And be it further enacted_, That any person who shall knowingly and willingly obstruct, hinder, or prevent such claimant, his agent or attorney, or any person or persons lawfully assisting him, her, or them, from arresting such a fugitive from service or labor, either with or without process as aforesaid, or shall rescue or attempt to rescue such fugitive from service or labor from the custody of such claimant, his or her agent or attorney, or other person or persons lawfully assisting as aforesaid, when so arrested pursuant to the authority herein given and declared, or shall aid, abet, or assist such person so owing service or labor as aforesaid, directly or indirectly, to escape from such claimant, his agent or attorney, or other person or persons legally authorized as aforesaid, or shall harbor or conceal such fugitive, so as to prevent the discovery and arrest of such person, after notice or knowledge of the fact that such person was a fugitive from service or labor as aforesaid, shall, for either of said offences, be subject to a fine not exceeding one thousand dollars, and imprisonment not exceeding six months, by indictment and conviction before the District Court of the United States for the district in which such offence may have been committed, or before the proper court of criminal jurisdiction, if committed within any one of the organized Territories of the United States, and shall moreover forfeit and pay, by way of civil damages to the party injured by such illegal conduct, the sum of one thousand dollars for each fugitive so lost as aforesaid, to be recovered by action of debt in any of the district or territorial courts aforesaid, within whose jurisdiction the said offence may have been committed.