New Delhi, India (CNN) -- Four children died early Wednesday in slum fire in New Delhi, officials said.
The youngest victim was 3, and the oldest was older than 10, said fire officer A.K. Sharma.
Two shacks were gutted in the blaze, which occurred about 1:45 a.m. local time in a neighborhood in southern New Delhi, the capital, he added.
More than 20 percent of India's city population lives in slums, according to government statistics, which officials attribute to rapid urbanization.