A man who worked for a Casa de los Niños facility faces one count of voyeurism involving a child, police said.

Mark Loebe, 27, was arrested Tuesday by Tucson police detectives and booked into the Pima County jail, said Sgt. Pete Dugan, a police spokesman.

On Dec. 24, police responded to a report of an allegation of inappropriate conduct involving Loebe.

An investigation was done, and detectives of the child sexual assault unit said Loebe observed a 12-year-old girl who was being cared for at the facility taking a shower, Dugan said.

Casa de los Niños provides shelter for abused or neglected children.