VIDEO: Firefighters treated four patients including a sheriff's deputy at the courthouse in Santa Ana after a package was opened that made them feel ill, officials said.
A sheriff's deputy opened a package on the third floor of the courthouse and several people immediately felt ill, officials said.
An Orange County hazardous materials team and the bomb squad responded around 2:30 p.m. and that area of the courthouse was blocked off, though the rest of the complex continued operations.
The Sheriff's Department said three civilians and one deputy were treated and were transported to a local hospital. They underwent decontamination before being transported. They were not considered to have life-threatening injuries.
There were no evacuations and the situation was described as "contained."
By around 5 p.m., officials said the initial investigation was complete and there was no additional threat to others at the courthouse.
The package was sent to a crime lab for further analysis.