A 46-year-old man was arrested Saturday after he allegedly sexually assaulted his stepson, a 24-year-old man who is a vulnerable adult.

The older man was arrested for exploitation of a vulnerable adult and first-degree sexual assault.

The victim told police he was subjected to nonconsensual sexual contact from his stepfather. When interviewed, the suspect admitted to consensual sexual contact with the victim, police say.

The alleged crime occurred within the city limits of Grand Island.

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