Police say John Marshall parents and students have nothing to fear from a rumor that began on Snapchat.
Officers say a teenager made a vague post about "karma" and "people that kept him down" Tuesday night.
Other students then took screenshots of the post and added information that was incorrect, such as the teenager having "two shotguns."
The school liaison officer spoke to the student Wednesday and made no arrest.
Police followed up on the incident when it spread to other forms of social media… and after parents called to ask if it was safe to send their kids to school.
Police determined the family owns no guns.