A van running a generator on State Street near The Mark construction site triggered the alarm, the county said.
A carbon monoxide alarm led to the evacuation of a downtown building earlier today, but the Sarasota County Fire Department has since worked to clear the scene.
The fire department responded to the incident around 11:45 a.m., according to a county spokesperson. The department determined a van running a generator had triggered the alarm.
The first floor of a building in the area was evacuated as a precautionary measure. The county was not able to provide information on which building was evacuated.
There were no injuries reported, the county said.
This is a developing story and will be updated as more information becomes available.