An Iowa high school teacher was placed on administrative leave for writing “Dont have my sniper rifle” on Facebook in response to a news story about Greta Thunberg’s visit to his area, a report said.

Matt Baish — a science teacher at Waterloo West High School — made the since-deleted comment on a post about an event with the 16-year-old climate change activist that included the caption, “Who’s all going ?” according to The Des Moines Register.

Thunberg, who has risen to global fame for her climate change activism, joined more than 3,000 demonstrators at a Friday afternoon climate strike in Iowa City, the paper said.

It’s unclear if Baish was joking about showing up armed to the rally, but a day after making the remarks he was placed on leave.

“The nature of the content shared rose to the level of putting this employee on administrative leave pending an investigation,” Tara Thomas, Waterloo Schools director of school and community relations, announced in a statement to students and staff.

“We appreciate your patience as we sort through the details and thank you for respecting the process.”

Local police are also investigating the Facebook post.