Heavy flooding in the Georgian capital, Tbilisi, has killed at least 12 people, with officials warning people to stay indoors to avoid animals that have escaped from a zoo. The missing animals include tigers, lions, bears and wolves. Three of the dead people were found within the zoo. A hippopotamus was cornered in one of the city's main squares and subdued with a tranquiliser gun. Rescue workers are searching submerged homes to check for trapped residents. Dozens of people have been left homeless. A day of mourning has been announced for Monday, 'Hellish whirlpool' Tbilisi Zoo spokeswoman Mzia Sharashidze told InterPressNews agency that three bodies had been found in the zoo, including those of two employees. People have been told to stay indoors until the animals have been found The hippopotamus was tranquilised, but some animals have been killed A lion was among the animals who died It is still not clear exactly how many animals remain on the loose She s...