MEMPHIS, Tenn. — WREG has learned the man arrested Sunday at a McDonald’s in Midtown once worked at a school cafeteria and at the Memphis Zoo.

Robert Cliff Jr. remains in jail Tuesday charged with sexual exploitation of a minor after someone at the McDonald’s on Union Avenue saw him viewing images of girls as young as 12 years old.

Cliff was never employed by the zoo or the Immaculate Conception Cathedral School, but did work at both places for two third-party food service contractors.

The Catholic Diocese of Memphis, which runs the school, said it didn’t know when Cliff started working at the school, but that his work ended in 2013 when their contract with his employer, Sodexo, ended.

“It is concerning. Absolutely,” said a woman whose daughter will be attending the school next year. “A pedophile around children is not a good thing.”

“You never know who your kids are around until something like this happens,” she added.

WREG checked and found Cliff had no prior criminal record in Shelby County and isn’t listed on the state’s sex offender registry.

“If he doesn’t have a prior record, there’s nothing they could have known. There’s no way they could have known what they’re dealing with,” said the parent.

Not only did Cliff once work at a school, his address listed in court records is an apartment in north Memphis near Kipp Memphis Academy Middle School, but the complex appears to be mostly vacant.

At the zoo, Cliff worked for a company called Lancer Hospitality from April 2015 until May 2016.

The zoo said it conducts background and drug checks for all of its employees but that some of its contractors have been able to circumvent these rules.

It said it is working to tighten its policies governing contractors.