When questioned, he asked why there was no transgender bathroom and told managers, "How do you know I'm not a female?"

CLARKSVILLE, Ind. (WTHR) — Police arrested a 32-year-old man after he allegedly sexually assaulted a woman in a Walmart restroom in southern Indiana Friday.

NBC affiliate WAVE-TV reports Nathaniel Brown told police he bumped into a female employee in the women's restroom, but she says differently.

The woman told police she was washing her hands when Brown came out of a stall and inappropriately grabbed her. In a report, she said she elbowed Brown in the chest and ran to tell a manager. When managers got to him, he asked why there wasn't a transgender bathroom in the store.

According to our newsgathering partners at the News and Tribune, Brown asked managers, "How do you know I'm not a female?"

Police came to the store and found Brown on a computer in the store searching the internet about laws pertaining to transgender bathrooms. Police found meth and syringes on him.

"Whether that was a legitimate inquiry he was doing or some sort of defense that he was simply exploring to assert in this case, I don't know," said Clark County Prosecutor Jeremy Mull. Mull said it's unclear whether drugs played a role in the incident.

Documents show Brown told police he used the women's restroom because it's cleaner than the men's restroom, according to News and Tribune.