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ARAPAHOE COUNTY, Colo. — A babysitter accused of sexually assaulting children was arrested in Aurora Friday morning.

The Arapahoe County Sheriff’s Office said Corey Medo, 22, is being held without bond on suspicion of four felony counts of sex assault on a child by one in a position of trust.

According to investigators, Medo had a profile posted to a babysitting website for a couple of years.

“The ACSO is not releasing the name of the babysitting website because the site conducted a background check on Medo and, at the time, there were no criminal charges against him,” the sheriff’s office said on its website.

Medo is accused of targeting boys between the ages of 7 and 10.

Several families hired Medo. However, the four charges stem from his contact with one family in Centennial.

While Medo was arrested at a home in Aurora, he does not live at the residence.

B & B Basketball Academy in Lakewood confirmed Medo was a coach at the program but no longer is. The academy would not say when Medo was a coach.

Medo also worked at Ralston Valley High School in Arvada. However, Jeffco Public Schools say he has not been an employee since 2015.

Ginger Swift owns ABC Nannies & Domestics, a company that recruits and screens nannies for families. Swift says in addition to thorough background checks, her company relies heavily on personal and professional references.

“We’ve learned in doing personal references people who are drug abusers, alcoholics, things that you would never think would come up through personal or professional references,” said Swift.

Swift recommends using a local service to screen babysitters and nannies but understands not all parents can afford that.

“I think the most important thing to tell families is to use your gut feeling. We’ve interviewed quite a few nannies and we feel something is not right or things don’t add up. If you ever feel like that, you should let your nanny go. It’s not worth risking it,” said Swift.

Rachel Skytta reported on this story.