Both Storm Grove Middle School in Indian River County and Treasure Coast High School in St. Lucie County received a bomb threat Monday.
Indian River County Sheriff Deryl Loar said that both of the threats were very similar.
He added that it won't be easy to track down who is behind the calls.
"It's a lot tougher tracking down a robotic call from what used to be a landline or even a cellular phone. These seem to be the craze nowadays--being generated by a computer," the sheriff said.
On Monday morning, a threatening call was made to Storm Grove Middle School in Indian River County.
The caller telling someone on campus that there was a bomb at the school, according to authorities.
School administrators evacuated the middle school, sending nearly a thousand students on buses to Sebastian River High School which is about fifteen minutes away.
Tom Yates was one of the parents waiting for his child at the high school Monday afternoon.
"I'm just happy that my daughter is safe and everyone is OK," he said.
He said it's frustrating that his daughter and many others had to be panicked by the threat.
"I think it's sick. Somebody that gets joy and pleasure out of seeing children scared and their parents scared for them. This world needs a lot of help," he said.
At Treasure Coast High School in Port St. Lucie, students also had to be evacuated after someone called in a threat around 11 a.m.
"This is a huge disruption for the school, for the students and for pretty much everybody involved. Law enforcement are going to come out and do a full investigation and if we can find who did it, they're going to be charged to the fullest extent of the law," said Sgt. Frank Sabol of the Port St. Lucie Police Department.
Authorities in both counties are working closely together on the cases, because the calls were very similar in nature according to Sheriff Loar.
If the people behind the calls are found, authorities say they will face felony charges.
**UPDATE** Storm Grove Middle has been given the all clear. School will be held as usual tomorrow, May 24. Details: https://t.co/sxY2t01BlR
— Indian River Schools (@IRCSchools) May 23, 2016