Some 70,000 people have been left homeless by flooding triggered by heavy rains in the central African nation of Chad, the U.N. Office for the Coordination of Humanitarian Affairs said Sunday. Twenty-four people have been killed and 29 others injured, said Ute Kollies, head of the office's branch in Chad. Forty-six others have died from cholera that broke out in the wake of the floods. Some 700 people are suffering from cholera, she was quoted as saying by CNN. Overall, nearly 145,000 people in Chad have been affected by the flooding, and that number is rising, she said. "Today is the worst, and it's getting more and more out of hand," she said. "This is the crisis point, at the moment." Flooding has affected more than half of Chad's regions, she said.