An early-morning explosion in an apartment building on the west side of Detroit has left at least 13 people, including several children, hospitalized—while causing such severe damage to the property that it will now have to be demolished.

Fire investigators have confirmed that a gas leak caused the explosion at an apartment building on Detroit's west side Monday morning.

An apartment building explosion was caused by a gas leak. The fire department said what's left of the structure will need to be demolished. An apartment building explosion Monday that rocked a westside Detroit community and injured a dozen people,