Hadley, MA – Multiple first responders are on scene at a Hadley grocery store for reports of a carbon monoxide scare.

Fire officials tell CBS 3 that crews are still on scene at Maple Farm Foods on South Maple Street.

They say a forklift was kept running, which caused the build-up of Carbon Monoxide.

Several people were taken to the hospital to be treated for sickness because of the gas, but everyone is expected to be OK.

Firefighters are ventilating the building.