An FBI informant who has helped catch some of the world's most dangerous terrorists is coming out of witness protection to warn that a terrorist sheik in prison remains a significant threat to the U.S.

Emad Salem is urging the U.S. to keep the ailing 74-year-old sheik Omar Abdel Rahman, often known as the Blind Sheik, behind bars and to not transfer him, even as governments overseas continue to press for his release.

"He will kill Americans," said Salem. "He will kill anyone who disputes what he says with a fatwa."

Salem, a one-time Egyptian military officer, had warned officials about the looming 1993 World Trade Center bombing, but his warnings were ignored after a lie-detector test was inconclusive and he said he would never testify at any trial. 

After the bombing, Salem agreed to become an FBI informant and managed to become the sheik’s personal assistant and bodyguard. Salem was able to record the sheik ordering the killing of Americans during his time in Jersey City, N.J., and Brooklyn, N.Y. 

Salem was also able to link the sheik to the 1993 World Trade Center bombers. Six people were killed and more than 1,000 injured in that first attack.

Now Salem is concerned about the mounting pressure on the U.S. from Egyptian President Mohammed Morsi and other Mideastern government leaders to get Rahman out of American custody.

'A terrible price'
In one letter dated Feb. 26, 2008, the justice minister of Qatar relayed a request from Rahman's family asking U.S. officials to have him transferred back to the nation to serve the rest of his sentence. They said they wanted to be able to visit him more easily, according to the letter by Qatar Attorney General Dr. Ali Bin Fetais Al Marri.

More recently, on this 20th anniversary week of the 1993 World Trade Center bombing, Rahman's sons wrote on their family website that "America will pay a terrible price" if he is not released soon.

"The rain begins with one drop. America should expect more violent reactions if it does not release the sheik," the sons wrote on the website.

Don Emmert / AFP, file

A 1993 photo shows Sheikh Omar Abdel Rahman, who is serving a life sentence in the U.S. for his role in terrorist attacks, including an explosion at the World Trade Center in 1993.

The sons pointed to the killing of U.S. Ambassador Christopher Stevens as an example of terrorists acting on behalf of the sheik. The terrorists in that attack are believed to have called themselves the “Sheik Omar Abdel Rahman Brigade” in honor of the Blind Sheik.

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The family also pointed to the recent attack on a gas plant in Algeria where hostage takers demanded the sheik be set free or American hostages would be killed.

The sons said they were hopeful that Morsi would make progress in working to free the sheik next month or they will "review their options."

Experts said the sheik’s family was intensifying an already active campaign to both seek the sheik’s release and inflame passions among the sheik’s extremist followers.

Calls monitored
The sheik has also been able to call his relatives twice a month from his prison, NBC 4 New York has learned. Officials said the calls are monitored, and his relatives tell NBC News' Ayman Moyheldin that the calls are personal in nature and do not include calls for a violent jihad.

But in one posting on their website, Rahman's sons posted a political message they said was from the sheik. In that message, Rahman urged Egyptians to vote for Morsi in the recent presidential election "because he is the candidate who represents Islam and represents the revolution."

A Federal Bureau of Prisons spokesman declined to discuss the specifics of the sheik's phone privileges.

Rahman's lawyer, Lynne Stewart, was arrested in 2002 and later convicted for her role in sneaking out terror messages for the sheik in which he called for more attacks on Western tourists in Egypt after the Luxor massacre killed 58 people.

“When are we going to wake up and smell the coffee?” asked Salem. “This man is dangerous in prison. What will happen when he is out of prison?”

A Justice Department spokesman insisted the U.S. government will not be swayed by the appeals from Mideast leaders calling for Rahman's release. 

“The Blind Sheik will spend the rest of his life in a U.S. federal prison. Period,” said DOJ spokesman Dean Boyd.

Still, Rahman remains an inspiring figure for al-Qaida and radical jihadist figures across the globe. Salem said he was risking his life stepping forward because the sheik and his followers want him dead.

“They are seeking to get me killed to be a feather in their hat, that 'We killed the man who helped America,'” Salem said.

But he said not stepping forward to warn about the potential threat the sheik and his followers still pose could be an even greater danger.

A New York Police Department spokesman said there is no new specific threat to New York but intelligence officials are aware of the Rahman family website and the terror warnings posted there this week.

While security experts said the sheik does not have operational capability from prison, they agree that as long as he is alive in a U.S. prison he could serve as inspiration for extremists to act. 

“This guy -- 1990 or 2013 -- sadly, unfortunately, [is] still in charge of his followers,” Salem lamented.  “He is the 'Prince of Jihad’ and will continue to be.”

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A 6-year-old girl -- shot and left for dead by the Taliban in Afghanistan earlier this year -- received free reconstructive surgery at a hospital in the U.S. Friday.

"She's OK. All is good, thank God!" said Elissa Montanti of the Global Medical Relief Fund.

The nonprofit children's organization, based on Staten Island, helped bring Marizeh to the U.S. after the attack that cost the girl her right eye.

Taliban fighters ambushed Marizeh's family as they drove home in a remote, unidentified region of Afghanistan last spring, said Montanti.

Her father tried to hide the girl under his feet inside the family car but she was shot in the face, after watching both her father and brother murdered.

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"They thought she had died. She was there for three hours before she was discovered," said Marizeh's doctor, Kaveh Alizadeh.

The plastic surgeon, who founded a nonprofit group that provides medical care to needy children, first heard Marizeh's story during a trip to Afghanistan.

On Friday, Alizadeh performed surgery on Marizeh at South Nassau Communities hospital on Long Island to help repair lingering damage to her breathing and facial structure. She had previously been fitted with a temporary prosthetic eye.

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The medical care should have cost upwards of $100,000, Alizadeh said; but in this case, it was all done for free.

"To think about the trauma she’s been through and to see her come down and have a smile on her face, it’s unbelievable," said hospital chief operations officer Joseph LaMantia.

Marizeh is expected to leave the Oceanside hospital this weekend and return to the Global Medical Relief Fund's headquarters in Staten Island.

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It's unclear when she will go home to Afghanistan. Montanti declined to reveal Marizeh's last name or hometown, for fear the Taliban will target her again.

"If they know the Americans are helping them, it's dangerous. So we have to be cautious," Montanti said.

For all who helped Marizeh, it was a danger worth facing, to restore a little girl's smile.

"She is a very happy little girl, a lovely girl," Montanti said.

By Jonathan Dienst, NBCNewYork.com
All civil litigation between Dominique Strauss-Kahn and the hotel maid who claimed that he sexually assaulted her has been settled in principle but no paperwork has been signed yet, according to a source familiar with the case.

The parties are expected to be in court next week in the Bronx to finalize the settlements.

The civil case emerged from the hotel room encounter that spurred now-dismissed criminal charges against Strauss-Kahn, the former International Monetary Fund chief who was a likely contender to be the next president of France before the scandal exploded.

The housekeeper, Nafissatou Diallo, said Strauss-Kahn tried to rape her when she arrived to clean his Manhattan hotel suite. Strauss-Kahn denied doing anything violent during the encounter.

Lawyers for both sides are not commenting at this time.

See a timeline of the case here.

Prosecutors dropped related criminal charges in the summer of 2011, saying they had developed doubts about Diallo's trustworthiness because she had lied about her background and her actions right after the alleged attack.