OAKLAND -- Five hundred employees at Kaiser Permanente's Northern California Division of Research in downtown Oakland were evacuated Wednesday morning after an apparent overheated elevator motor caused a smoke alert, officials said.
The smoke was detected in the elevator machine room on the roof of the five-story building at 2000 Broadway about 8:56 a.m., fire officials said.
At least 23 firefighters responded and a ladder was elevated to the roof so crews could have quicker access.
The source of the smoke was determined within a few minutes. There was never any actual fire, officials said.
No injuries were reported.
Firefighters left the scene about 9:30 a.m. The building reopened at noon.
Two of the building's three passenger elevators were working, as was a freight elevator, officials said.
Northbound lanes of Broadway were temporarily closed at 20th Street while firefighters were on the scene.