There's a new resident at Marathon Gas Station in Ohio, and you might call him Casper.

A ghost-like blue glow has appeared on security cameras at the filling depot, and it's causing quite a stir. The image moves around the screen for half an hour, leaves, then returns. At one point it seems to land on a car windshield, and then it floats away.

The spooky images have drawn a crowd to the filling station in Parma, Ohio, just outside Cleveland. Motorists want to take a look at the surveillance images for themselves.

Everyone wants to catch a glimpse of the mysterious blue haze, and there are plenty of suggestions about what it could be.

Some feel there's nothing supernatural about the light and say it's a plastic bag that's out of focus. Others are sure it's some kind of spiritual presence.