No details yet on this man's injuries, but they are said to be severe.
US student fighting for life after chimpanzee attack - Telegraph:
"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 said.
"According to eyewitnesses, two chimpanzees grabbed the man by his feet and pulled him under the perimeter fence and into the enclosure."
He said that the man was dragged nearly a kilometre into one of the enclosures, and paramedics required armed escorts to rescue him."
Update from NBC news: