U.S. Customs and Border Protection said in a statement early Friday it "does not endorse or condone private groups or organizations that take enforcement matters into their own hands. Interference by civilians in law enforcement matters could have public safety and legal consequences for all parties involved."
"If a member of the community witnesses or suspects illegal activity, please call 911, or if related to illegal cross-border activity, call the Border Patrol tip line at 1-877-872-7435 or 1-800-BE-ALERT," it added.