Granite Falls Police were notified Wednesday night of a possible bomb threat at Yellow Medicine East High School in Granite Falls. A custodian found the threat written on a bathroom wall and contacted police immediately. Surveillance video was reviewed, and from that a possible source of the threat was identified. The person of interest was found to be a minor child who confessed to the incident and it was learned that there was no actual threat so an all clear was given. Because of the suspect’s age, no information about the suspect is being made available.