A maintenance man cleaning out a newly vacant apartment in Jonesboro, Arkansas found 25 vials of E. coli bacteria in the refrigerator, according to reports.
The vials marked “E. coli” were in a foam box in the fridge at a Willow Creek Apartments unit, The Associated Press reported. After the facilities manager alerted authorities, an Arkansas National Guard hazardous material crew removed the bacteria.
The bacteria were determined to be medical grade, Fire Battalion Chief Marty Hamrick told the Jonesboro Sun.
While E. coli can cause diarrhea, urinary tract infections and pneumonia, officials determined there was not enough of a safety danger to evacuate the apartment complex, the AP reported.
TV station KAIT8 reported the FBI has been called in to investigate the incident.