MINNEAPOLIS --Authorities say one person is dead and another is missing after a natural gas explosion at a college prep school in Minneapolis.

The fire department says both individuals worked at the school.

Fire Chief John Fruetel says the body was found Wednesday after the explosion caused a partial building collapse at Minnehaha Academy. The private Christian school serving students from pre-kindergarten through 12th grade.

The Minneapolis Fire Department says the blast was caused by natural gas, and contractors were working on the building at the time.

Authorities say seven adults are hospitalized, including three with critical injuries.
Fire crews have spent hours searching through the rubble.