Consult an attorney to confirm your state laws before doing anything. In any event, if a squatter has been there long enough, then in most cases you will have to proceed under a formal eviction process and law enforcement will be unable to help until they are handed an eviction order to execute.
Apparently, there is a newly prevalent scam in Texas where people sell property they do not own. It takes various forms, but a common method is for the scammer to record a false deed transferring title to property to themselves (often vacant/rural land) into the appropriate county records (since in most cases, anyone can record any instrument that is in proper form). Then, the scammer poses as the owner and sells the property to an unsuspecting, bona fide purchaser who goes through the regular process to close on the purchase through a title company. The title company does not catch the scam because, in their mind, title was properly passed to the scammer via the recorded deed. The true, legal owner will then not discover the scam until they notice a construction crew building a house on their land and confronts the new "owner" holding the deed to "their" new land. The scammer vanishes while the true owner, the new "owner" and the title company then start suing each other. In the end, all parties are usually forced to settle and lose plenty of cash in the process.
“They’re getting scary sophisticated.”
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