The incident took place in Mushhartolii of Anaitha village under Nawada police station late on Thursday night, a district police official said.
the victims are poor Dalits," police said.
Muzaffarpur district administration has ordered an inquiry into it. A police official said that the victims reportedly purchased the alcohol from a shop selling country liquor in their village. They complained of stomach pain after drinking it and started vomiting.
No arrests have been made so far.