A mysterious video leaving people "spooked" on Reddit appears to show a door open by itself in an empty office moments after the blinds are pulled down.

In the clip, which is a handheld camera recording CCTV, an empty corridor is visible.

Several seconds in, something strange appears to happen to a door with a window in the right of the frame.

The blinds in the window are pulled up and the door slowly opens, apparently being moved by an invisible force.

Reddit user u/AlienAilin posted some extra spooky information alongside the video, claiming that the owner of the office has "seen someone" in the room but put it down to "paranoia".

The creepy footage baffled many viewers on Reddit
The creepy footage baffled many viewers on Reddit

He added: "Then somewhat a week later the authorities were contacted and sent to the office building since the alert went off that someone opened a door in the building, when they got there they found no one and nothing.

"They checked the surveillance and found this, you can see the blinds being pushed at first and then the door slowly begins to open.

"Some spooky stuff."

The video has been upvoted nearly 1,000 times in the r/ghosts forum, with many people saying it had given them the chills.

"Heck I’m spooked just thinking about it," wrote one.

Someone else commented: "Those blinds closing before the door opens is freaky."

A third agreed: "Pretty spooky!"

Sounding more cynical, another person wrote: "Why would a ghost open a door when they could walk right through it?"

Other skeptical viewers suggested it could just be the wind or perhaps a squatter who is keeping out of sight of the security cameras.

This comes after a petrified mum shared a video of what people reckoned was a "ghost with tentacles for hands" leaving her baby's bedroom.

And a man became spooked when he filmed odd things happening just days after he attended his uncle's funeral.