Armed forces personnel along with national disaster management and emergency teams from nearby districts were deployed to trace missing people and help with rescue operations, Muchhar said.
Authorities said more than 400 people were on and around the colonial-era suspension bridge at the time of the collapse. The bridge had drawn many sightseers celebrating the Diwali, or festival of lights, and Chhath Puja holidays.
A five-member team was appointed to conduct an investigation into the disaster.
The 230-metre bridge was built during British rule in the 19th century. It had been closed for renovation for six months and was reopened for the public recently.