A former UPMC Children's Hospital doctor was arrested in an undercover child sex sting in Florida, authorities said.

The Florida attorney general said that 38-year-old Mohamed Mesregah was one of six people arrested during an operation targeting predators who were sexually exploiting children online.

A spokesperson for UPMC confirmed Mesregah's employment had been terminated but offered no other details.

Investigators said officers posed as 14-year-old girls on an online escort website. All six people arrested were told they were talking to underage girls, yet they "engaged in sexually explicit and harmful communications," prosecutors said.

Mesregah was charged with using a computer to seduce, solicit, lure or entice a child; traveling to meet after using a computer to lure a child; an

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