The FBI has launched a new campaign warning people who send threats to schools and other locations.
There's been a massive amount of threats recently and they tend to increase after shootings.
The Educator School Safety Network says they're following 10 school threats a day. That number jumped up to 70 following the Parkland Shooting.
The FBI wants to remind people that sending in a threat, fake or otherwise, can get you five years in prison.
If you see a threat online, contact law enforcement as soon as possible but don't share or forward the threat until it's been investigated. The FBI says you could be spreading misinformation and cause an unnecessary panic.
And if you think someone could be planning something the FBI also takes tips at this site.