A 24-year-old Alpena man was arrested after allegedly sexually assaulting a woman at the Alpena County Library.
According to the Alpena Police Department, the assault happened on Saturday.
Officers worked with the library staff to identify the suspect using surveillance footage. The suspect was located at his home in Alpena and was arrested.
He is being held on a second degree criminal sexual conduct charge.
The suspect is scheduled to be arraigned on Wednesday.