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Schools are dealing with a new wave of copycat threats after last month's elementary school shooting in Uvalde, Texas.

The threats are part of a growing concern for law enforcement. In Florida, investigators have arrested several teenagers and a 10-year-old student in the last two weeks.

"Every single day, our school resource officers are dealing with verbal threats. We see written threats to commit mass shootings," Lee County Sheriff Carmine Marceno said.

Just two weeks after the Uvalde school shooting, Lee County deputies arrested a student over school shooting threats.

Lee County, Florida, Sheriff's Office works to stop and prevent future school shootings

Law enforcement officers in Florida are working to stop or prevent future school shootings. (Lee County Sheriff's Office)

UVALDE, TEXAS SCHOOL SHOOTING: 19 CHILDREN, 2 TEACHERS KILLED, SUSPECTED SHOOTER DEAD

The student sent pictures of AR-15s to another classmate, writing "Get ready for water day," in reference to an upcoming event, investigators said. In a statement, the student's attorney argued the 10-year-old wasn't trying to threaten anybody.

Florida school shooting threat revealed by Lee County Sheriff's Office

According to the Lee County Sheriff's Office, a 10-year-old student sent photos of AR-15s to another classmate, writing, "Get ready for water day."

However, the Lee County Sheriff's Office has a zero-tolerance policy.

FLORIDA SHERIFF ON 10-YEAR-OLD ARRESTED FOR SCHOOL SHOOTING THREAT: PARENTS ‘AFRAID TO DISCIPLINE’

"The last thing we want to do as law enforcement officers is place a 10-year-old in handcuffs. The last thing we want to do is investigate a 10-year-old for making threats to commit a mass shooting. But, safe kids, safe schools are so important, and not waiting one second, and every single threat is credible until proven otherwise," Marceno said. 

Investigators are taking the next few months to focus on traning. The Lee County Sheriff's Office has planned to dedicate 300 hours of training to active shooter threats.

ANOTHER SCHOOL SHOOTING STUNS THE COUNTRY, WITH NO CHANGES IN SIGHT

"We need people that train and that are not going to hesitate one second to perform if a person decides in Lee County, Florida, that they're going to come to a school and present deadly physical force against our children that are there to learn, against our teachers that are there to teach, against innocent people in our schools. We will not wait one second. They will be met with deadly force," Marceno said.

Uvalde robb elementary banner after Texas shooting

A banner at a memorial outside Robb Elementary School in Uvalde on June 3. (AP/Eric Gay, File)

In the aftermath of the Uvalde school shootings, school districts across the country are getting more questions from parents.

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"We want to make sure they know we are doing everything we can to keep them safe. Kids are our future," said Lee County School District Executive Director for Safety and Security Dave Newlan.

Lee Public County Public Schools has at least one resource officer at every school. Deputies are expected to continue training over the summer, and for the first time, to train wearing VR goggles simulating active-shooter scenarios in schools.