The Douglas County Sheriff's Office arrested a teacher on Tuesday under charges of Sexual Exploitation of a Child.
Timothy Martini, 26, is from Castle Rock and is a teacher at Douglas County High School. Authorities did not say whether the case involved a student at the school.
The Douglas County Sheriff's Office Special Victims Unit (SVU) began investigating Martini in February 2013.
If you have any information related to this investigation or any other possible misconduct please contact Detective Dea Aragon 303-814-7131.
Martini is being held on a $50,000 bond. He faces two counts of Sexual Exploitation of a Child and one count of Contributing to the Delinquency of a Minor.