A bomb threat led to the evacuation and closure of Hood River Valley High School late Monday morning, but a search of the building found no destructive device. According to an e-mail Hood River County School District Superintendent Dan Goldman sent to Hood River Valley High School parents, Hood River County Sheriff's deputies were called to the school Monday morning after a student found written material indicating a bomb was on school grounds. Law enforcement officials recommended the high school be evacuated to allow them to conduct a sweep of the facility, which found nothing. Hood River County Sheriff's Sergeant Pete Hughes says the response to the threat and the evacuation went according to emergency plans in place. Buses drove students home on their normal afternoon routes. All afterschool activities at Hood River Valley High School were cancelled for the day. School officials expected classes to resume at Hood River Valley High School Tuesday on their normal schedule. Hughes says the investigation into who made the threat is continuing.