A natural gas explosion left nine injured and two unaccounted for at the Minnehaha Academy in Minneapolis, Minnesota, on August 2.

The explosion caused part of the building to collapse, according to the Minneapolis Police Department. Five people were transported to the hospital, where three are in critical condition, the Star Tribune reported.

Video of the explosion at the private Christian school shows smoke coming from the building rubble. Credit: Periscope/Dillon Parker via Storyful