His victims are from all across the country, including possibly 12 women from the Pittsburgh area.

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“We need to know what occurred with this individual and any other young lady out there,” Di Luzio said. “I blocked him on everything — Instagram, Snapchat, Facebook and his phone number.

One woman from the Pittsburgh area, who we are not identifying, told KDKA’s Lynne Hayes-Freeland, “I met him on a dating site called ‘Plenty Of Fish.’ He was sweet at first, calling me beautiful and cute things like that.” “A perpetrator might cultivate feelings in the victim for him or her,” Burke said. I felt sick to my stomach, like that could have been me if I didn’t follow my gut instincts.” Authorities say one of the reasons they are putting Mull’s picture out there is to help other victims come forward.

Police are still trying to determine if Mull was involved in human trafficking, but investigators say he appeared to use threats to keep the women from escaping.

“One of the most powerful threats, as you might imagine, would be threatening the victim’s family, so if that threat is made, it really ensures compliance,” Burke said.

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In Pennsylvania, children less than 13 years of age cannot grant consent to sexual activity.

More From Lynne Hayes-Freeland: It is believed that Mull used social media and dating apps to meet and lure women. “I just stopped texting him and he finally got the hint.” KDKA’s Kym Gable Reports: “It’s my understanding that this man threatened human trafficking, so my guess is he was threatening sex trafficking to the women who he was perpetrating against,” Burke said.