Alaska State Troopers say a Metlakatla teen was charged with multiple counts of child pornography after investigators found explicit images of young children on his cellphone. 

According to the trooper's online dispatch, on Sept. 29, Prince of Wales AST began an investigation on a 15-year-old female who was receiving explicit images through messenger. AST then interviewed 18-year-old Walter Forsberg and his cellphone ended up getting seized. 

"Ultimately, the phone was forensically examined by the Alaska Bureau of Investigations, Technical Crimes Unit and multiple images of child pornography were discovered," troopers wrote. "The images are of children between the estimated ages of 18 months – 10 years of age being sexually abused."

An arrest warrant was issued for Forsberg after a grand jury indicted him on 10 separate counts of possession of child pornography. Later that day, troopers were able to arrest him. 

Troopers are investigating the identities of the children with the assistance of the FBI. 

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