WEST CHESTER, PA — Chester County authorities have determined that a suspicious mail-in ballot envelope that prompted an emergency response at the Government Services Center on Oct. 30 contained no biohazard in preliminary laboratory testing, shifting the investigation to a noncriminal matter.
The Chester County District Attorney’s Office reported that testing conducted at the direction of the FBI found no biological hazard associated with the ballot. Final confirmation testing remains pending and is expected to be completed next week.
Investigators also established that the ballot was deposited at a local drop box rather than delivered through the U.S. Postal Service.
The ballot was traced to an elderly voter who cooperated with investigators. Authorities determined that the incident did not warrant criminal treatment, according to the District Attorney’s Office.
The original ballot has been invalidated, and the voter was referred to Chester County Voter Services to cast a replacement ballot in accordance with Pennsylvania election law.
The findings resolve several questions raised by the Oct. 30 incident, including the ballot’s origin, whether investigators suspected criminal activity and whether the affected voter would retain an opportunity to vote.
The emergency began when a county employee processing mail-in ballots detected an unidentified non-liquid substance by feeling the exterior of an envelope.
The employee contacted 911, prompting a response from the Chester County Hazardous Materials Response Team and other emergency personnel.
The hazardous materials team determined that the building was safe within 90 minutes of the emergency call. The incident disrupted operations at the Government Services Center for approximately three hours.
Although preliminary laboratory results found no biohazard, authorities have not publicly identified the substance that prompted the response.
The FBI-directed confirmation testing is expected to take seven to 10 days, with results anticipated during the week following the election.
The investigation was conducted jointly by Chester County Detectives and the FBI, with consultation from the U.S. Attorney’s Office for the Eastern District of Pennsylvania.
The Chester County Department of Emergency Services, Sheriff’s Office, Hazardous Materials Response Team and Voter Services Department also participated in the response.
The findings remove the immediate suspicion of a deliberate hazardous-material incident involving election operations while preserving the affected voter’s opportunity to submit a valid ballot.
The District Attorney’s Office considers the matter noncriminal, although final laboratory confirmation remains outstanding.
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