A Thamesville, Ont, man is facing charges for allegedly having sex with a 13-year-old girl.

On Saturday night, a woman went to Chatham-Kent Police to say her teenage daughter had been sexually assaulted by a 21-year-old man.

Police said their investigation found that the girl had been involved in a sexual relationship with the older man.

Police said because of the age difference between the two, the man has been charged with sexual assault and sexual interference.

Police said they will not release the name of the accused in order to protect the identity of the child.