New Delhi, May 27 -- An implosion at a pulp and paper mill in southwestern Washington state killed multiple people and critically injured several others on Tuesday morning (May 26), according to local authorities and company officials.

The incident occurred around 7:15 a.m. at the Nippon Dynawave Packaging Co. facility, triggering a major emergency response involving firefighters, paramedics and hazardous materials crews.

According to the Longview Fire Department, the incident occurred at approximately 7:15 a.m. on May 26 at the company's facility located at 3401 Industrial Way in Longview. Officials said a tank containing "white liquor," a chemical treatment substance used in paper manufacturing, ruptured during operations.

Initial re...