A spooky video showing a stretcher trolley moving on its own went viral with thousands of viewers thinking they were seeing paranormal activity.
The eerie video was filmed in a courtyard of the provincial hospital of the city of Rosario, in the north-eastern Argentine province of Santa Fe.
It shows an unattended stretcher on wheels suddenly start to drift forwards.
Over a few seconds it gets quite feisty, eventually zooming about so much that it crashes off the hard courtyard on to a patch of grass.
Wind cannot be behind the movement, as plants in the video are still.
Video commenters erupted into debate about whether the hospital was haunted or a prank was being played.
The Health Ministry of Santa Fe tried to put the debate to bed by saying that two hospital workers had rigged up a system of ropes so they could move the trolley without being seen.
The quality of the video is fairly high for security camera footage but no strings or ropes can be made out.
But local media reported that two hospital workers had got into trouble for faking the ghost video, using thin, translucent string, perhaps fishing line, to move the trolley and create the paranormal scene.
They were not named and the punishment they faced was not reported.