UPDATED 12:25 pm — From Roanoke County Public Schools: The lockdown at Cave Spring Elementary has been lifted. Police thoroughly searched inside and outside the school and found no evidence of any threat to the school. Students and staff were safe the entire time and were never in any danger. The school day will continue as scheduled. We appreciate parents understanding and cooperation during this situation and we would like to express our thanks to the Roanoke County Police Department for their rapid response and investigation.