Wellesley Middle School officials are working with the town’s Police Department after a stark message was found spray-painted on the front walkway outside of the school building Tuesday morning.
As students trickled into the entrance to begin their day, they were greeted by the words “ARE WE NEXT” in bold, orange letters, according to Mark Ito, principal of Wellesley Middle School, who sent an e-mail to parents shortly after the graffiti was discovered.
In a statement, David Lussier, the superintendent of schools in Wellesley, said the district has no evidence “the content of this message represents a threat, but nonetheless we are taking it very seriously.”
Custodians covered the message quickly on Tuesday, and it was later removed, said Lussier.
“It is also important to note that there were no similar messages found at any other school,” he said in the statement. But there will be additional police presence throughout the district as the investigation continues, he said.
Lussier said the school district is working closely with police “to investigate this act of vandalism and ask anyone with related information to contact the Wellesley Police or Wellesley Public Schools.”
Ito asked parents with any information about how the graffiti “was generated” to call the school’s office or reach out to him personally. He asked that people not post pictures of the vandalism while the investigation is underway.
In a follow-up e-mail sent out Tuesday afternoon, after the graffiti was erased, Ito said a review of video footage showed that the incident did not affect building safety. Even so, he promised parents there would be an increased police presence at the school through Wednesday.
“We have also been given assurance that the police will be monitoring our building during the evening and early morning hours,” Ito wrote. “Administration is on alert, and we have asked that teachers help to keep students calm and safe in their daily routines.”
Ito said guidance counselors would be available to speak to students if necessary.
A police spokesman referred a reporter to the School Department.
Kelley Tuthill, a parent of a Wellesley student, shared an image of the graffiti on Twitter before the note from the principal went out.
“This is what my girls saw when they walked into middle school this morning,” she wrote. “Kids everywhere deserve to feel safe at school.”
The incident comes at a time when schools everywhere are on high alert following the February shooting at the Marjory Stoneman Douglas High School, in Parkland, Fla., where 17 students and teachers were killed by a former classmate.
Since then, several threats have been made by students around the state.
On March 14, students and teachers around the country are planning school walkouts to protest gun violence and call for stricter gun control laws.Danny McDonald of Globe Staff contributed to this report. Steve Annear can be reached at email@example.com. Follow him on Twitter @steveannear.