One of four such Google customers was a 17-year-old who was Facebook friends with Tibbetts. The teen's brother was on the same construction crew as Tibbetts' boyfriend, who was out of town when she vanished, so investigators assumed he may have known Tibbetts was home alone. The teen told agents he was at home July 18, but later said he may have been mowing a cemetery. He raised suspicion when he told agents that he had recently "wiped" his smartphone of all stored data and didn't have it on him.