The Cumberland County Sheriff’s Office said it is investigating a threat made against a high school in the county. According to deputies, the sheriff’s office was made aware of a threat of mass violence shared on social media involving Gray’s Creek High School. Other WRAL Top StoriesThe sheriff’s office said it is investigating the threat with the school administration, and they are making sure appropriate safety measures are in place. Deputies are asking anyone to report any suspicious or threatening behavior to the sheriff’s office at 910-323-1500 or call 911. Tipsters can also remain anonymous by contacting Cumberland County Crimestoppers at 910-483-8477 or online.