Explosions rocked a recycling business in Toledo, Ohio

TOLEDO, Ohio (NBC, KYMA) - Explosions rocked a Toledo, Ohio recycling business early Tuesday morning, sparking a large fire at the Brent Industries facility.

Officials say two workers are unaccounted for and a few others suffered minor injuries. Two explosions reportedly happened during a shift change at the business.

Firefighters responded to the scene and were working to keep the flames from spreading.

There are also hazardous materials inside the facility that are a serious concern for fire officials. At least half of the building has collapsed.

It's not yet known what caused the explosions. Brent Industries has not yet commented on the fire.