Update: 9:49am
The 'airborne substance' that caused the Walmart to be evacuated was a natural gas leak. There have been at least 10 people treated for headaches according to reports.
We are getting reports from our news partner Fox 17 that the Walmart on Charlotte Pike is being evacuated right now due to an 'airborne substance.' As of right now, this is all that has been reported, but we will keep you up to date as more information is released.