Four white rhinos have died in Zimbabwe after drinking from a sewage-polluted lake that is also the main supplier of water to the nearby capital, the wildlife authority confirms. Three zebra, four wildebeest, four fish eagles and several goats and cattle also died over the past week after drinking from Lake Chivero, 30 kilometres (19 miles) from Harare, ZimParks spokesperson Tinashe Farawo tells AFP. The animals had been poisoned by cyanobacteria, which is also toxic to humans. IMAGES AND SOUNDBITES