At least 300 people have been evacuated from a building on the Nebraska Medicine campus.
Firefighters at the scene say there is an irritant in the air near the Durham Outpatient Center. At first it was thought that it was coming from an elevator shaft, but now it appears the issue may be the result of some painting that's being done in the parking garage.
At least two people are being treated for injuries.
This is a developing story. Stay with KMTV and kmtv.com for updates.