Berlin zoo chiefs devastated over death of polar bear cub Fritz
A polar bear born at Berlin zoo last November has died.
Four-month-old Fritz fell ill at the weekend at the Tierpark, in the eastern part of the German capital.
Vets separated him from his mother, Tonja, on Monday to conduct tests which indicated a liver inflammation.
The zoo said vets were unable to find the precise cause of his illness and Fritz died late on Monday.
Zoo director Andreas Knieriem said: "We are devastated. It's incredible how fond we had become of that little polar bear."
Like Berlin's famous polar bear Knut, who succumbed to illness aged just four in 2011, Fritz had a twin who died shortly after birth.