Two more Iowa school districts are dealing with threats of violence.

Classes in the West Branch district are cancelled for today after a message threatening students was found in a school building yesterday afternoon. West Brach school officials say the threat has not been substantiated, but in the interest of safety cancelled today’s classes. Officials plan to resume school tomorrow.

In Fort Dodge, a 15-year old was taken into custody and charged with felony terrorism after posting threats on social media.

Officials say multiple students were talking about participating in a school shooting. One residence was searched for weapons, but none were found. Police say other students immediately reported the threat to school officials.