Opposition Rashtyriya Janata Dal blamed the state government for the incident.
Leader of opposition Abdul Bari Siddiqui, who met the injured at the hospital, criticised the negligence over treatment of the injured.
Celebrated six days after Diwali, Chhath is dedicated to the Sun god. During the festival, married women observe fast for 36 hours, and devotees offer wheat, milk, sugarcane, bananas and coconuts to the Sun god.
