Fans reportedly came face-to-face with Justin himself when they entered the clifftop house via an open gate, TMZ is reporting.
However, Justin was unimpressed when he saw the girls, who had apparently interrupted him enjoying a pool party with his pals.
He is even alleged to have confiscated one of their mobile phones, which they were using to document their visit.
Reports suggest one of the girls was celebrating her 12th birthday when she was caught trying to take photos of Justin and his friends.
Justin reportedly didn’t get the police involved and handed them back the phone a few days later when they returned to claim it.