Hazardous materials crews are investigating a “brown substance” that was left on multiple chairs and keyboards at a Wells Fargo office building in north Phoenix.
The building off Interstate 17 near Cactus Road was evacuated before lunchtime Monday.
A Phoenix fire spokesman said no employees had come in contact with the unknown substance.
Police and fire officials are analyzing the material, he said.
Return to azcentral.com for updates.
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