A 23-year-old Chicago man was arrested on charges of sexual assault and kidnapping after he allegedly grabbed a 7-year-old girl from a South Shore park, dragged her into a building, and forced his penis into her mouth.

Details filed in court said that a witness to the kidnapping called police Thursday afternoon at about 5:30 p.m. and followed until police arrived, WFLD reported.

Investigators said when they arrived the little girl was crying for her mother and yelling “He stole me!” She was taken to a hospital for an evaluation.

Johnathan Hill has been charged with predatory criminal sexual assault of a victim under 13 and aggravated kidnapping of a victim under 13.

Chicago Police Chief of Detectives Brendan Deenihan said earlier that the little girl had been at the park with her two 13-year-old brothers and that they “walked away for a moment,” leaving her on a park bench.

“And then there was an individual who was 23 years of age, who came by and basically kind of grabbed the child,” he said.

The witness called 911 because “she could tell that the 7-year-old didn’t want to be with this male,” Deenihan said.

The court document say that Hill hit the little girl in the head and told her he was taking her to her mother.

According to the documents, Hill told police that the victim was “for the day and his wives were for the night.”

Hill is being held without bond.

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[Featured image: Johnathan Hill/Cook County Jail]