An Ohio social worker was arrested for having sex with a 13-year-old boy she was assigned to counsel, according to police.

Payton Shires, 24, allegedly admitted to the disturbing behavior during a call with the boy’s mother and detectives from the Columbus Police Department, according to reports.

Shires of Mount Sterling was previously employed by the National Youth Advocate Program (NYAP), a group which specializes in working with families working with the foster-care system, according to the Columbus Dispatch.

It remains unclear whether she was assigned to the boy through NYAP.

The boy’s mother contacted police Sept. 27 to report her suspicions after allegedly discovering inappropriate text messages between her son and Shires, court documents showed.

Cops allegedly conducted a search of the phone and discovered footage of the boy and Shires having sexual contact.

When investigators interviewed the boy, he reportedly admitted to having sex with Shires on at least two occasions in September.

Shires was arrested Friday after allegedly admitting her behavior with the boy to his mother on the call monitored by police.

She was charged with unlawful sexual conduct with a minor, according to WSYX, and is being held on $500,000 bond.

State records show that the social worker was licensed in June.

“The National Youth Advocate Program is saddened by the situation involving one of our former employees and a young person served by our organization,’’ the organization said in a statement.