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George Lopez had one too many last night at a Canada casino -- law enforcement tells TMZ, the comedian was arrested for public intoxication after passing out on the casino floor.

Law enforcement sources tell us Caesars Windsor security alerted police to the Lopez situation -- presumably after they found him on the floor -- and officers subsequently arrested him
inside the casino bar at Caesars Windsor.
 
No charges are being filed against Lopez -- we're told he was pretty much dumped in a drunk tank to let him sober up.

Lopez had performed at the casino just prior to his arrest and is scheduled to perform again tonight.

Lopez has been released and we're told he will perform tonight.