The bus carrying Gangasagar pilgrims turned turtle while trying to overtake another vehicle, South 24 Parganas District Magistrate Y Ratnakara Rao told PTI.
Sugiya Devi (65), a resident of Jharkhand's Palamu district, received multiple injuries in the accident and was rushed to a nearby hospital, where she was declared 'brought dead', he said.
"Eight others, including the bus driver, are undergoing treatment at the hospital and they are out of danger. Sugiya Devi's body has been airlifted to Kolkata," Rao said.
"Nobody has been arrested so far as the matter is still under investigation," he said.
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