WINTERPORT — Samuel L. Wagner Middle School closed June 3 after a threatening message was written in the boys’ bathroom the day before, according to a letter the school sent to parents and staff.

There was an increased law enforcement presence in other Regional School Unit 22 schools Friday, according to Superintendent Regan Nickels. As of noon, there was no incident at any of the schools.

State Police, the Waldo County Sheriff’s Office and other local safety departments maintained a presence in the area and frequently checked on the schools, she said. Those safety checks are expected to continue into next week. The students are also required to sign out when they need to use the bathroom or move around buildings in the district going forward.

The district is not releasing details about the investigation at this time, she said. She urges people who have any possible details that could aid the investigation to contact the school or her office immediately.

“We want you to have the facts so you can purposefully discuss them with your child and emphasize the seriousness of this issue,” she said in the district email. “The theme of ‘If you see something, Say something’ is critical here.”

Some parents chose to keep their children home June 3 and the district was honoring that decision by excusing those absences, she said. Most parents sent their children to school and felt better knowing that there would be a law enforcement presence nearby.

The district serves Hampden, Newburgh, Winterport and Frankfort. The last day of school is June 15.

The threatening message comes just over a week after a gunman killed 19 children and two teachers at an elementary school in Uvalde, Texas.

Waldo County Sheriff Jeff Trafton said parents become stressed about sending their children to school after incidents like the one in Uvalde. His goal is to make the community feel safer by spending time close to schools in the district.

“There are a lot of parents that are worried about sending their kids to school, and it just shouldn’t be that way — but unfortunately, in the world we live in, it is,” he said.

The Sheriff’s Office asks its deputies to stop in and check on the schools periodically because they need to be familiar with them and the layout of the grounds so they can recognize staff and know who should and should not be there, he said.

There have been other incidents in county schools where students have made threats, Trafton said. Usually it is because a student wants to get school canceled. But the Sheriff’s Office takes all threats seriously and he is glad the school reacted quickly and handled the situation well. “We’ll continue to work with them and try to have an impact,” he said.

The middle school was to reopen Monday, June 6, she said. Nickels can be reached at 862-3255 or emailed at rnickels@rsu22.us by people who have questions or concerns. Anonymous information can be submitted through the district’s feedback form on its website. State Police are investigating the threat.

“These are challenging times and it is essential that our community come together to ensure the safety of our students, staff and families,” Nickels said in the district email.