The FBI is investigating after a highly toxic poison called ricin was discovered Tuesday at Wake Robin, an upscale retirement community in Shelburne.

No individuals appear to have been exposed to the poison, and the potentially contaminated areas have been evacuated, according to a joint press release issued Wednesday morning by the FBI and the Vermont departments of Public Safety and Health. 

"At this time no one from the public is in danger," the press release noted, describing the incident as "isolated."

Ricin is a natural substance found in castor beans that, when turned into a powder and swallowed or inhaled, can cause symptoms as serious as respiratory failure and seizures.

The FBI said it isn't releasing any additional information at this time.