New Delhi, India (CNN) At least 94 people have died and more than 150 have been hospitalized after consuming tainted alcohol in India, officials said.

The victims were said to have consumed unregulated moonshine, known locally as "country-made liquor."

"We have arrested two people, but we are still investigating their role in the incident," said Partha Pratim Saikia, a senior official with the police in the Golaghat district in the northeastern state of Assam.

The first cases, reported Thursday evening, indicated most victims were tea garden workers, said Manoj Baruah, an official in Jorhat, the other district where cases were reported.

"It is a case of alcohol poisoning, and it has affected a few tea gardens and villages surrounding them in this district," Saikia said.