Florida cops who publicly insisted they had eyes on Brian Laundrie amid the Gabby Petito investigation have admitted they actually mistook him — for his mother. “They are built kind of similarly,” North Port Police Department spokesperson Josh Taylor told WINK on Monday regarding the huge blunder in a case that sparked national attention. Police had set up around-the-clock surveillance last month outside the North Port home where Laundrie lived with his parents after the 23-year-old was named the sole person of interest in his girlfriend’s disappearance.