The Des Moines Fire Department and Des Moines Police Department responded to a structure fire early Tuesday morning north of downtown Des Moines, just before 8am.
Authorities say an explosion occurred in the old Quonset-hut storage building at 1800 Keo Way. Crews battled the smoke and flames for a few hours. Motorists were detoured around the area during that time. An investigation underway. No injuries were reported.