A pot said to be radioactive dropped off by a man at the Goodwill Store in the 300 block of South Fair Oaks Avenue prompted a full-scale hazardous materials teams response and the shut down, for hours, of that major thoroughfare on Tuesday morning.
In the end, the donated item was harmless, authorities said.
Pasadena, Glendale and Burbank Fire Departments hazmat teams converged after the 9:20 a.m. report.
Employees from the store were evacuated and medically evaluated, Pasadena Fire Department spokesperson Lisa Derderian said.
Traffic was kept away from the scene. South Fair Oaks Avenue was closed from Bellevue Drive north to Del Mar Boulevard, authorities said.