San Mateo County Sheriff's Office

During her first month on the job, new San Mateo County Sheriff Christina Corpus – the first woman to hold the post – had to deal with a year’s worth of crises, everything from floods to a mass shooting. Damian Trujillo reports.

During her first month on the job, new San Mateo County Sheriff Christina Corpus – the first woman to hold the post – had to deal with a year’s worth of crises, everything from floods to a mass shooting.

History was made on the Peninsula Saturday as Christina Corpus was sworn in, becoming the first Latina sheriff in San Mateo County.

History was made on the Peninsula Saturday as Christina Corpus was sworn in, becoming the first Latina sheriff in San Mateo County. Christie Smith reports.

The San Mateo County Sheriff’s Office is asking for the public’s help in locating a 3-year-old girl.

The San Mateo County Sheriff’s Office is asking for the public’s help in locating a 3-year-old girl.

New technology is helping the San Mateo County Sheriff’s Office prepare to respond to hundreds of difficult scenarios.

New technology is helping the San Mateo County Sheriff’s Office prepare to respond to hundreds of difficult scenarios. Audrey Asistio reports.

The break in a decades-old cold case came from a lucky break by out-of-state police. Law enforcement officials will not discuss how they solved the case, but the NBC Bay Area Investigative Unit has learned it started with Oklahoma police finding a private journal with a confession to a crime nearly 1,500 miles away.

The break in a decades-old cold case came from a lucky break by out-of-state police. Law enforcement officials will not discuss how they solved the case, but the NBC Bay Area Investigative Unit has learned it started with Oklahoma police finding a private journal with a confession to a crime nearly 1,500 miles away. Investigative Reporter Jaxon Van Derbeken has...

The San Mateo County Sheriff’s Office on Thursday announced it has made an arrest in a decades-long cold case homicide. Stephanie Magallon reports.

The San Mateo County Sheriff’s Office on Thursday announced it has made an arrest in a decades-long cold case homicide.