This is a developing story and will be updated throughout the day.

The city ordered people within a 1-mile (1.6-kilometer) radius of the explosion to evacuate their homes and businesses Tuesday night. More than 900 people live within the evacuation zone, and all of them had left by Wednesday morning, the mayor said. A shelter-in-place order was issued for residents beyond the evacuation zone within a 3-mile (4.8-kilometer) radius.