PORTLAND, Maine (AP) — A firefighter was killed in a massive fire and explosion at a lumber mill in Maine’s midcoast region that injured at least other 11 people Friday, authorities said.

The firefighter was found dead at the mill, state officials said Friday. The firefighter was part of a huge emergency response to flames tearing through Robbins Lumber in rural Maine when a silo exploded, authorities said.

The investigation into the cause of the blast may not immediately offer answers, Maine fire marshal Shawn Esler said.

MaineHealth Maine Medical Center in Portland, which has a Level 1 trauma designation, said it was treating 10 patients who had been transferred from local hospitals. Northern Light Eastern Maine Medical Center in Bangor was treating one patient who was in critical condition, a spokesperson said.

The mill is in Searsmont, a town of about 1,500 people, about 95 miles (153 kilometers) from Portland.

State and local emergency responders helped as fire departments worked for hours to contain the flames.

“We have dumped all of the resources from the whole county over to that area,” Waldo County 911 director Mike Larrivee said.

Robbins Lumber’s website describes the company as a “high-tech lumber manufacturer” that has been in existence since 1881 and family-owned for five generations.

Christian Halsted, a family spokesperson, said the fire had been a “hugely devastating day for the family” and the mill will not be operating in the near future. The family was cooperating with authorities on the investigation, he said.

Lumber and wood products are a critical and historic industry in Maine. The Maine Forest Products Council said the industry contributed more than $8 billion to the state’s economy in 2024 and provides about 29,000 jobs.

Officials including Gov. Janet Mills said Friday that they were monitoring the response to the blaze.

“I urge folks to stay clear of the area, follow the instructions of law enforcement, and allow emergency personnel to respond. I ask Maine people to join me in keeping all those affected in their thoughts,” Mills posted on X.

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