(CNN) A home in a quiet Westchester County, New York, neighborhood was hiding enough fentanyl to kill 2 million people, the US Drug Enforcement Administration said.

Federal agents found five kilograms (just over 11 pounds) of fentanyl and six kilograms (13.2 pounds) of heroin Friday when they raided a fentanyl mill operating out of a home in Ardsley, the DEA said.

Five people who were arrested during the raid are facing several drug charges.

Braulio Mata, 31; Jose Garcia, 44; and 20-year-old Yarly Mendoza-Delorbe were charged with conspiracy and drug possession. Another suspect, Ramon Aracena Alfe, 47, is facing a possession charge. The fifth person, 32-year-old Dionell Duarte Hernandez, has been charged with possession and resisting arrest, officials said.

The group began renting the home a few months ago and neighbors had noticed several vehicles coming and going, CNN affiliate News 12 Westchester reported.

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