Hazmat Team Investigates Substance at Chester County Building

Hazardous materials crews and local authorities went to the Chester County government building at 313 West Market Street in West Chester on the morning of October 30 after a suspicious substance was found there. The site is also identified as a county voting office.

The county hazardous materials team was dispatched shortly after 10 a.m. Crews worked inside and outside the building while authorities investigated the substance.

County emergency personnel reported that nobody needed transport to a hospital and the area has reopened. The Chester County District Attorney’s Office is handling the investigation.

The District Attorney’s Office was scheduled to provide an update at a news conference on October 30, 2026. The response came days before voters were due to cast ballots in the midterm elections.