(PUEBLO, Colo.) — The Pueblo County Sheriff’s Office (PCSO) said an 18-year-old man and a 17-year-old girl were arrested following a months-long investigation into the taking and sharing of sexually explicit photos of another underage girl.

According to PCSO, 18-year-old Alonzo Gutierrez and the teen were arrested on felony warrants for alleged Sexual Exploitation of a Child.

Deputies said Gutierrez has been booked into the Pueblo County Jail after he was arrested on Friday, March 22 for charges of Sexual Exploitation of a Child and Sexual Assault on a Child.

PCSO said the underage suspect has since been booked into the Pueblo Youth Center and was arrested on Monday, March 25 for charges of Sexual Exploitation of a Child and Criminal Solicitation to Sexual Assault on a Child.