A Nederland man is one of the Americans kidnapped by an Islamist militant group in Algeria.
12 News spoke with the victim's brother by phone Thursday morning. He asked that his brother not be identified while the hostages are still in the hands of the kidnappers.
According to reports from CNN, some of the foreigners taken hostage by the Islamist militants at an Algerian gas plant have been freed in an operation by the Algerian army.
The operation freed two Britons, a Kenyan and a French citizen, the Algerian Press Service said. The report also said there are a number of casualties in the action, but the exact number is not yet known. CNN could not independently confirm the report. CNN affiliate BFM-TV reported the French citizen is a nurse who worked on the site.
An Irish hostage is also free, the Irish government said, but it is not clear if he was freed by the Algerian military effort.
"The kidnap ordeal of Belfast man, Stephen McFaul, has ended," said the taoiseach, or Irish prime minister, Enda Kenny. "I am greatly relieved to hear that Stephen is safe and well. I believe he has already spoken to his family in Belfast and I wish him a safe return home to his loved ones."
An unspecified number of Americans are among the hostages held by terrorists at a BP facility in Algeria, White House spokesman Jay Carney said Thursday as he condemned the attack "in the strongest terms."
"We are closely monitoring the situation," he said. "We are in contact with Algerian authorities and our international partners as well as BP security office in London. Unfortunately, the best information that we have at this time, as I said, indicates that U.S. citizens are among the hostages. But we do not have, at this point, more details to provide to you. We are certainly concerned about reports of loss of life and we are seeking clarity from the government of Algeria."
Algerian troops fired on two SUVs trying to leave the kidnapping site, Algerian radio said, citing local sources. An Algerian reporter saw heavy clashes near the site, APS and radio reports said.
The kidnappers have AK-47 firearms and put explosive-laden vests on some of the hostages, a State Department official said. It is not clear whether the hostage-takers wore the suicide vests when they staged the action, but they did put them on some of the hostages, another U.S. official said.
"Situation remains very serious and difficult," said a Twitter message from the British prime minister's office.
An unarmed Predator drone has flown over the BP plant where the hostages are being held to gather intelligence on the site, a U.S. official said Thursday. Satellite imagery was taken previously.
The hostages were taken in an attack by militants on the gas plant and oil field in the desert Wednesday, apparently a direct response to the French offensive in neighboring Mali.
The BP gas field is 60 kilometers (40 miles) west of the Libyan border and 1,300 kilometers from the Algerian capital, Algiers.
The Algerian army embarked on an operation Thursday to take control of the In Amenas site, BP said, citing the British and Algerian governments.
"The situation remains unclear and we continue to seek updates from the authorities," BP said in a statement. "Sadly, there have been some reports of casualties but we are still lacking any confirmed or reliable information. There are also reports of hostages being released or escaping."
The company is now making arrangements to get non-essential workers out of country, the statement said.
Earlier, Algeria's state media reported that all Algerian nationals who had been held hostage were free: some had fled, while others were released. The hostages still detained are foreigners, Algerian Interior Minister Dahou Ould Kablia said.
Locals cited by APS said the army freed about 600 Algerian workers. Thirty Algerian workers escaped, and they were recovered by helicopters flying over the site.
The Algerian government also rejected a demand from the Islamist militants who seized the hostages for safe passage to nearby Libya.
"The authorities do not negotiate, no negotiations," Kablia said on state television after confirming the demands Wednesday night.
"We have received their demands, but we didn't respond to them."
The militants said they carried out the operation because Algeria allowed French forces to use its air space in attacking Islamist militants in Mali. Media in the region reported that the attackers issued a statement demanding an end to "brutal aggression on our people in Mali" and cited "blatant intervention of the French crusader forces in Mali."
The fallout escalated after rebels kidnapped the Westerners, dragging governments beyond Africa into the region's conflicts and insecurity.
During the attack on the gas plant in the desert Wednesday, kidnappers killed two people -- an Algerian and a British national, the Algerian Press Service reported. Hostages included Americans, Japanese and Britons, according to officials from those nations, who did not provide the number of people seized.
The rush of events sent governments scrambling to account for workers in the region.
Japan and the United Kingdom sent officials to Algeria to get the latest information. Ireland said there were reports that one of its citizens was involved. French President Francois Hollande earlier confirmed the presence of French citizens at the site but would not say if any of them were hostages.
"I will not give any precision on the number of French citizens who could be held hostage. What counts now is to allow the Algerians to free them," Hollande said.
The U.S. State Department said it is still working to determine how many citizens were involved. American hostages could be as few as three, two U.S. officials said Wednesday.
An interagency meeting on the issue was held at the White House Thursday morning, with John Brennan, the chief counterterrorism adviser and President Barack Obama's nominee for CIA chief, a U.S. official said. The official said the Algerian government told the United States about the operation.
So far, the crisis is viewed as an "internal situation for Algeria," said the official, who emphasized that Algerian security forces have successfully handled internal threats.
The United States has been working through the Algerians to help resolve the crisis. There is not yet enough information to understand the situation on the ground, the official said.
"It's too early for us to do anything," he said, adding that more solid information is needed on the situation.
Veteran jihadist known for hostage-taking
The man behind the group claiming responsibility for the attack and kidnappings is a veteran jihadist known for seizing hostages.
Moktar Belmoktar, an Algerian who lost an eye while fighting in Afghanistan in his teens, has long been a target of French counter-terrorism forces. Libyan sources said he spent several months in Libya in 2011, exploring cooperation with local jihadist groups and securing weapons.
Wednesday, the attackers put the number of hostages at "more than 40," including seven Americans, two French, two British and other Europeans. Another Islamist group told the Mauritanian News Agency there were 41 "Westerners."
However, the Algerian Press Service reported that "a little more than 20 foreign nationals are held hostage."
U.S. Defense Secretary Leon Panetta, in Europe meeting with NATO allies, called the hostage-taking in Algeria "a terrorist act."
As world powers scramble to limit the fallout, the United States is reviewing requests for support from the French in their operation in Mali, but no decisions have been made on specifics, said State Department spokeswoman Victoria Nuland.
Last week, French troops and warplanes joined Malian government forces to battle Islamist militants, who have seized most of the African nation's northern region.
France, the former colonial power in Mali, said it has about 1,400 troops in what it has dubbed Operation Serval.
Europe's largest powers appeared united in their goal of removing al Qaeda-linked militants from the West African nation, where Islamist rebels are fighting to form their own territory in the north.
Nations have pledged to contribute transport planes, including Germany, Belgium and Canada. Others, such as Italy, are promising "logistical support" for the operation.
EU to help Mali's army
European Union foreign ministers Thursday agreed on a mission to train Mali's army, the EU said. It will include instructors, support staff and force protection over a 15-month period. The agency has said about 450 non-combat troops will be launched, hopefully by next month. The mission was established after Malian authorities requested help.
Hollande has said it was a "necessary decision" to go into the country.
"The fight against terrorism has no borders, it affects us all. What we are doing in Mali is not simply linked to this country. There are terrorist networks which, following what happened in Libya last year, have installed themselves in a large part of West Africa and are trying to destabilize the area and are involved in trafficking. Our duty is to put an end to this and France assumes its responsibility," he said Thursday.
Hollande stressed that France was in Mali at the request of its government and within the framework of international law.
Mali was one of the most successful democracies in Africa until a coup toppled the president last year, leading the Islamists to capitalize on the chaos to establish themselves in the north.
In the quest to establish Sharia law, they have killed and mutilated residents who disobeyed them, leading the International Criminal Court to launch a war-crimes investigation.
Mali's government asked the U.N. tribunal to investigate in July, after Islamists seized much of the country, the court said.
The United Nations said it is aware of reported rights violations in Mali. It is preparing to deploy "the U.N.'s multi-disciplinary presence to Bamako, which will include a human rights component that will aim to monitor and report on alleged human rights violations." Bamako is Mali's capital.
Journalist Said Chitour contributed from Algiers, and Faith Karimi and Joe Sterling wrote from Atlanta. CNN's Barbara Starr, Jethro Mullen, and Tim Lister contributed to the report.
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