Sex dungeon victim Elisabeth Fritzl to give dramatic TV interview about her 24-year ordeal

Miss Fritzl, 42, is thought to have chosen the same interviewer who spoke to Natascha Kampusch about the eight and a half years she was imprisoned in a cellar.

Miss Kampusch, now 20, escaped in August 2006 and told of her ordeal on Austrian ORF TV.

Miss Fritzl could make millions of pounds in syndicated rights for the interview. It is thought that more than 300 TV stations will broadcast it.

She is expected to talk about the first time she was raped by her father Josef, 73, and how she coped with multiple births alone in the dungeon.

The interview has been organised in part to reduce the pressure on the family from photographers camped at the door to Amstetten-Mauer hospital where Miss Fritzl is in a secure ward with her mother Rosemarie, 69, and five of her six children.

Miss Fritzl's eldest daughter Kerstin, 19, is still in a coma.

Josef Fritzl is to undergo DNA testing to see if he is the killer of three women whose murders have remained unsolved in Austria.

Natascha Kampusch broke free from an eight-and-a-half year captivity in August 2006 and told the world of her ordeal on ORF TV in her homeland.

Media reports in Austria say that Elisabeth is now poised to do the same after marathon negotiations between the TV station and her lawyer.

Upwards of 300 TV stations globally will pay handsomely to beam it live or in repeat showings.

Media in Austria said none of the children - either the three she gave birth to who lived upstairs from her underground tomb nor the two of three healthy ones forced to endure her captivity below - will be in the studio with her.

Christoph Feurstein, the journalist who interviewed Natascha for her first - and subsequent - TV appearances, has been lined up for what promises to be a gripping television spectacle.

It is expected to be broadcast next Monday evening (May 26).

Elisabeth is also expected to talk about how she felt after one of her stillborn child was burned in a stove by her father after it died; how she thought she would never see sunlight again; and her hopes for a more normal future with the children who adore her.

"Elisabeth's hatred of her father is a bottomless pit," said one ORF source.

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"It might not be good for the psychological healing process but Elisabeth's heart pumps nothing but pure venom for him."

It is unclear whether she will have to wear tinted glasses for the interview. Her eyes are still very weak from years of never seeing sunshine and high-powered studio lights could, fear doctors, be too much for her.

There is increasing tension between authorities and paparazzi who know that a picture of Elisabeth or her children would be worth hundreds of thousands of pounds.

In a weekend fracas a security guard at the hospital was injured after he fell from a balcony while tackling a photographer.

Hospital officials confirmed that 17 lensmen have been caught in recent weeks trying to get into the Amstetten Mauer hospital.

They included one dressed as a policeman, another that disguised himself as a cleaner and a third who dug a hole in the grounds, filled it with provisions and then covered himself with a bird watcher's hide in the hope of the life-changing picture.

He was caught by a sniffer dog while several others hiding in trees have been rumbled with thermal imaging cameras provided by local mountain rescue guides usually used to spot trapped climbers or stranded skiiers.

Austrian media also reported yesterday that a hospital worker had taken secret pictures of the family and was offering them for sale at 300,000 euros - £260,000.

Officials have sent a letter to staff warning them that there will be legal consequences and a claim for damages that would "far exceed any profit made from the sale of such photos."

The Fritzl family staying at the clinic include Elisabeth and her two children from the cellar Stefan, 18, and Felix six, and her three children that lived in freedom - Alexander 12, Monika 14 and Lisa 15.

Elisabeth's mother Rosemarie is also in the hospital.

Daughter Kerstin, 19, the third cellar captive, is still in a coma.

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Police chief Franz Polzer says he is being considered as a suspect in the 1986 murder of 17-year-old Martina Posch, and two other murders in 1966 and 2007.

Also on Sunday another major newspaper, the Kurier, asked the question in a headline: "Is Austria the heart of darkness?"

It said that 64 percent of Austrians believe the image of the country has been damaged as a result of the Amstetten case.