Overview
- Anhydrous ammonia began leaking around 10 p.m. Wednesday from a tanker behind the Holiday Inn Express near East Main Street and Cypress Drive.
- Authorities report 36 people were hospitalized, including 11 in critical condition who were transferred to Oklahoma City hospitals.
- Hundreds were evacuated to Southwestern Oklahoma State University’s Pioneer Event Center and additional residents received door‑to‑door warnings overnight.
- The shelter‑in‑place order was lifted Thursday morning after improved air readings, though access around the incident area remains restricted.
- Local fire and police, the EPA and the Oklahoma National Guard’s civil support team are conducting air checks, advising exposed residents to decontaminate, and cautioning that site remediation will take several days.