A Brownwood man is behind bars after allegedly sexually assaulting a teen.

Jeffery Hamil, 39, was arrested Tuesday on a charge of aggravated sexual assault.

According to police, the victim – a 13-year-old girl – was sleeping in Hamil's home while her mother was partying with Hamil, also in the home.

The mother left for a medical emergency, leaving her daughter.

Hamil is suspected of taking off the victim's pants against her will and sexually assaulting her.

She was treated at Hendrick Medical Center.