The Doniphan School District received several threats over the last two months sparking an investigation between several departments. Following the latest lockdown last week, the Missouri State Highway Patrol along with the Doniphan Police Department and Ripley County Sheriff’s department are now asking for your help in finding out who is responsible. Since March 17, the Doniphan School district has received four threats. Now, the departments are offering a reward in hopes of tracking down any suspects. District superintendent Jennifer Snyder says the reward was donated by folks from the community and continues to grow. In March, classes in the district were dismissed for two days, and the school district held a public forum to address the issues. Snyder says these threats have cost the departments hours of overtime pay and it has impacted students in the classroom.