The video was captured by a group of tourists, the Mirror reported.
Tourists were visiting the Cathedral of Guadalajara in Jalisco in Mexico, where the preserved remains of Santa Inocencia are encased in glass
As shown in the video, a child saint who died 300 years ago appears to suddenly open her eyes.
One visitor was filming the tour of the holy building on his camera when he captured the moment she appears to open her eyelids.
The frightening footage was posted on YouTube where it has been viewed nearly a million times.
At first sight the corpse, which has been wax-treated for preservation and whose face hasn’t decayed in 300 years, looks like a statue.
But as the camera pans up and down the body it focuses on the face before the dead girl seemingly opens her eyes.
Many viewers have called it out as being a fake but others believe it may be a sign.