Image Credit: Twitter screenshot 
An overturned semi-truck in Tucson, Arizona, leaked noxious nitric acid, prompting officials to issue a shelter-in-place order for nearby residents.
Video of the hazmat incident on the busy I-10 freeway caught by passing motorists Tuesday showed plumes of dark orange smoke emanating from the site of the crash.
DEVELOPING: ‘Shelter in place’ – Hazardous fumes pour uncontrollably from an overturned truck in Tucson, Arizona, on I-10. pic.twitter.com/a6Eua1IvmO
— Upward News (@UpwardNewsHQ) February 14, 2023
Residents told to shelter in place. pic.twitter.com/wRF5yEl4Oy
— Upward News (@UpwardNewsHQ) February 14, 2023
An emergency alert text message concerning the shelter-in-place orders warned residents to “Turn off heaters, air conditioning units that bring in outside air.”
“Individuals within 1 mile radius should shelter in place,” the alert added.
The Arizona Department of Public Safety noted early Tuesday evening they were still working to contain the event.
–AZDPS Investigating Collision and Hazardous Materials Spill on Interstate 10 in Tucson–
Updates will be provided when available on our incident management log:
https://t.co/tO7v5IFu7k#AZTroopers pic.twitter.com/mIzJuNIk42
— Dept. of Public Safety (@Arizona_DPS) February 15, 2023
Meanwhile, a Tucson Hazmat team was spotted at the scene.
BREAKING: Tucson Hazmat Team on scene of a toxic crash on I-10 in Arizona.
Emergency shelter in place issued to residents. https://t.co/wLFGgHiZkX pic.twitter.com/8WsCQgLQir
— Upward News (@UpwardNewsHQ) February 14, 2023
The latest hazmat scare comes in the wake of a massive airborne toxic event caused by a train derailment, and subsequent controlled chemical release, in East Palestine, Ohio.