Gigi and Bella Hadid: Dad Claims Personal Pics Were Stolen by Family Guard

Gigi and Bella Hadid's dad says he was betrayed by an employee who stole precious pics of his daughters and private pics of Michael Jackson.

Mohamed Hadid claims in a new lawsuit ... Juan Carlos Gonzalez worked for him at his home and stole 2,200 photos. The pics include photographs of Gigi and Bella when they were minors, various private parties and family photos with the King of Pop.

We're told Gonzalez worked as the family's security guard.

Hadid says the photos were pilfered from his home office and he suspected Gonzalez and demanded them back, but he refused to return them.