Erin Conway-Smith/AP, file
Chimpanzees sit in an enclosure at the Chimp Eden rehabilitation center, near Nelspruit, South Africa in this Feb 2011 photo.
By NBC's Rohit Kachroo and msnbc.com staff
An American studying chimpanzee behavior in South Africa was ?fighting for his life? after he was attacked by two of the animals, according to a report.
The chimpanzees dragged the man for more than a mile, under a fence and into their enclosure at Jane Goodall Institute Chimp Eden near Nelspruit, The Telegraph newspaper reported.
The paper said the victim of the attack had not been named. However, it said it understood he was a ?young university student from the United States who had been observing the animals at the reserve for several weeks.?
Jeffrey Wicks, a spokesman for private ambulance firm Netcare911, told the Telegraph that witnesses said the man was leading a group of tourists when the attack happened.
"A ranger at a chimpanzee sanctuary near Nelspruit is fighting for his life after he was attacked by two frenzied animals while leading a tour group at the park this afternoon," he added. "According to eyewitnesses, two chimpanzees grabbed the man by his feet and pulled him under the perimeter fence and into the enclosure."
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Paramedics needed armed escorts as they went in to treat the victim, NBC?s Rohit Kachroo reported. It was unclear whether this caused any delay.
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The victim was stabilized at the scene and taken by ambulance to a private hospital in Nelspruit, NBC said. There have been no similar attacks at the reserve, which opened more than six years ago.
David Oosthuizen, Jane Goodall Institute executive director, confirmed the reserve was on lock down following the incident, The Telegraph said.
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"We understand that the gentleman is stable and we really feel for him," he told the paper. "This has been very upsetting for everyone ? it is just horrific. We are an organization that's respected worldwide for the work we do so anything like this is very bad."
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He added that some of the animals kept there had been abused before they were rescued and taken to the institute.
"These chimpanzees have six times the strength of a human being so you have to respect them and we certainly do," he said.
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