Authorities say threats of mass violence directed at schools in St. Mary's County, Maryland, are not credible.
The St. Mary's County Sheriff's Office announced Tuesday it was investigating the threats that "correlate" to the anniversary of the shooting that killed Great Mills High School student Jaelynn Willey.
The threats were circulating on social media and via text messages, deputies said.
"After an extensive investigation, no sustained or credible threats were identified. The St. Mary’s County Sheriff’s Office and St. Mary’s County Public Schools will continue to fully investigate all threats reported, and will continue to work together to ensure the safety of our students and faculty," the sheriff's office said Wednesday.
Willey, 16, was in the hallway of the high school on March 20, 2018, when police say Austin Rollins pointed a semi-automatic handgun at her and fired. Authorities said Willey and Rollins had a previous relationship.
Another student was shot in the leg.
Deputy First Class Blaine Gaskill confronted Rollins in less than a minute and fired at him, hitting his gun at the same time the shooter took his own life.
Great Mills High School will release students two hours early on Wednesday and said a variety of support and counseling services would be available for students during the school day as the school remembers the shooting. The campus will also be closed to the public.
Anyone who has information about the threats was asked to call 301-475-8008.