Knut the Polar Bear Is Dead
updated 03/19/2011 AT 05:00 PM EDT
•originally published 03/19/2011 AT 01:45 PM EDT
"He was by himself in his compound, he was in the water, and then he was dead," Berlin Zoo bear keeper Heiner Kls told the Associated Press. An autopsy will be performed on the 4-year-old mammal to determine the cause of death. Polar bears in captivity have been known to live more than 30 years.
The city is in shock. Berlin Mayor Klaus Wowereit told the tabloid B.Z., "This is sad news. We were all so fond of him."
For more about Knut's life in the spotlight and to leave messages regarding his death, visit PEOPLEPets.com