A district police official said the accident occurred near Sukhasan village in Saharsa, about 200 km from here. Most of the victims were women.
"About 40 people were returning on a tractor-trolley to their village after visiting a temple during the ongoing Durga Puja," the official said.
Unconfirmed reports said 15 people died.
All the injured were admitted to a government hospital.
The district administration has launched rescue and relief operations, officials said.
--IANS (Posted on 12-10-2013)