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The footage is shaky as the camera pans to and fro moving from room to room – each in a state of disarray, left in haste - before descending into the basement.

The cellar is lit by naked bulbs. With bare walls and concrete floor it looks cold even on film and is all but abandoned, except for a small table covered in a cloth.

An open Bible and burned out vestige candle sit on it. Salt is scattered on the concrete floor – a desperate ritualistic attempt to rid this place of evil.

Be gone! The family, under instruction of a priest and clairvoyants, set up an altar in the basement and surrounded it in salt in a bid to banish the evil spirits

Fears: Ammons, pictured, said she saw her daughter levitating in a bedroom. A nurse and a CPS worker later reported seeing her nine-year-old son run backwards up a wall before flipping over to the ground

Father Michael Maginot explains how he performed three exorcisms - two in English and one in Latin - on Latoya Ammons in his church, St. Stephen Martyr in Merriville, Indiana

‘His head was turning, his eyes rolled back, his mouth went crazy, he started talking in tongues then it threw my grandson completely across the room.’

The nurse who witnessed this would not go back into the room while the doctor, realizing this was well beyond his capabilities, called police and paramedics to take the child and his brother, both of whom fell unconscious, to Gary ER.

When there, and in the grips of demonic possession, his grandmother maintained, her youngest grandson – growling and gurning – walked backwards towards a wall then glided up it, walking backwards to above her head height, holding her hands all the way as she tried to coax him down and ‘it’ out, before flipping over her head and landing on the floor.

The child had no recollection of the event that was witnessed by nurses, social workers and paramedics all of whom recorded it in official reports.

Ooze: The family and officials reported an oil-type substance running down furniture and the blinds, marks can be seen above. Even when they sealed the room and returned, it would continue to run

Cary Indiana Police Captain Charles Austin, 62, was there the day the footage seen here was recorded. He entered a skeptic and left convinced that he had just witnessed a ‘portal to hell.’

Speaking to MailOnline he said: ‘Everyone of us who was there that day in the basement and who saw what we saw, went through what we went through after…we all think the same, we all call it the same. That bit of dirt is a portal to hell.

When Capt Austin heard of a bizarre initial report on a Monday afternoon his sergeant told him that Child Protection Services were involved.

Capt Austin, 62, said: ‘The sergeant told me that the children had been missing school and there was talk of satanic goings on. He was very leery of it. I contacted some people, high-ranking officers; we decided to take a look.

Eerie: Cops and child protection workers were also spooked during visits to the home in Gary, Indiana (pictured). In this image, a figure appears in a window, right, although no one was home

What is it? A close-up of the image shows the cloudy white figure in the window of the home

Activity: Most of the problems at the home were around the basement stairs, pictured. Police dug a four foot hole under the stairs to look for graves

‘Ghostly things are easier to deal with,’ said Father Maginot, explaining, ‘A lot of the time as Catholics you can have a mass, pray for them, tell them to go into the light, not to be afraid. But demons are different. You're inviting in guests from other realms and they don't necessarily want to leave.'’

During his visit to the Carolina Street house Father Maginot said that among the many strange phenomenon he witnessed were walls dripping with oil, Venetian blind rods tilting from side to side in unison and apparently for no reasons, seemingly set footprints appearing on the floor.

Lights repeatedly flickered then stopped when approached in such a way that the priest became convinced this was ‘an intelligence’ not simply an electric fault.

The final straw, the family told him, was when they were sitting as a family watching television and a bottle of Febreeze floated up, moved to and fro in the air before being hurled into Latoya’s room, smashing a lamp. In the aftermath they saw the shadow of a man.

They left the house for a hotel that night and never returned to live there again.

A clairvoyant who had visited the house and told Latoya she saw ‘hundreds of demons’ in the basement had told her to anoint the house with oil and put salt down to seal the gateways to demons

Father Maginot did the same during his visit uttering blessings and trying, at every turn, to find a logical explanation for the things he was seeing and the things these women were telling him. But increasingly he struggled.

He said: ‘I was trying to find a focus for it, to understand where it was coming from because that can help solve these things.’

Father Maginot became convinced that Latoya’s former lover was a ‘trigger’ or possible ‘source.’ Every time he asked her about this man – who is not the father of any of the children – Latoya complained of more symptoms of the possession, fever, cold, headaches, nausea and convulsions.

He said: ‘After almost four hours when she was going through one of these moments I took my crucifix and put it to her forehead and she began convulsing.

‘I had thought the demons were with the kids but now I could see they were with her. She was the source. They jumped from her and they jumped from child to child – they would pick up each other’s chants, or convulse in turn, act crazy, or growl in turn. But they were with her.

‘I said, that’s enough. We’re not prepared to do an exorcism here but I’ve got enough there’s no need to torture anyone.’