A firework at a Fourth of July celebration in Michigan killed one person and injured nine others on Monday, authorities said.

The firework exploded and struck a 43-year-old woman, causing her to bleed from her back and chest late Monday evening in Holland, the Ottawa County Sheriff’s Office said, according to NBC News.

Emergency crews arrived at Main Street just after 11 p.m. and discovered the injured woman, who was pronounced dead at the scene.

First responders also treated nine other people with injuries, ranging from minor to critical, who were taken to area hospitals, the sheriff’s office said.

It’s unclear what caused the explosion.

Several nearby cars and homes were also damaged in the incident.

Between 60 and 80 people were in attendance at the private Fourth of July celebration Monday, witnesses told News 8.

“It was just a typical Fourth of July,  a lot of food, celebration and fireworks,” one Holland man who didn’t want to be identified told the outlet.

Another partygoer said that while he didn’t know the deceased woman, a close friend of his sustained shrapnel wounds to his head and leg from the explosion.

“I don’t know if it was like a homemade firework or something somebody had and it was almost halfway through the show and it got lit somehow and it exploded, and shrapnel was everywhere,” another witness said.

Authorities have not identified the deceased woman.