Two photos posted to the popular online forum Reddit appear to warn students hosting President Barack Obama for a visit not to open curtains because of snipers outside.
"Do not open curtains," read the signs, posted to Reddit on Wednesday, in all caps.
"Due to President Obama's visit there will be snipers on the roof so do not open the curtains," it added.
The president was in Sweden Wednesday for a brief visit ahead of the G-20 meeting that begins tomorrow in St. Petersburg.
Obama made a scheduled stop at Sweden's premier technical university, KTH Royal Institute of Technology, to highlight Sweden's goal to eliminate their use of fossil fuels by 2050.
On their website, the university posted of "practical" security information "concerning the presidential visit."
"The visit by one of the world’s top leaders to KTH requires considerable security arrangements," the website said, noting multiple school buildings would be closed and outlining several security precautions.
After Obama's appearance, the website was updated notifying students "gates and barricades have been removed" and "life on campus is slowly going back to normal."
"Thank you all for showing understanding for the consequences of the enormous security measures surrounding the visit," it added.
TheBlaze could not confirm whether or not the pictures posted online were snapped at KTH Royal Institute of Technology.
A spokesperson for the U.S. Secret Service was not immediately available for comment to TheBlaze Wednesday evening.
This article has been updated to include additional information about President Obama's stop at KTH Royal Institute of Technology on Wednesday.
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