The man was arrested with a concealed knife in his possession. A Cotati man who threatened online to bring a knife to his son’s school — prompting an evacuation Monday — was arrested hours later with a concealed blade in his possession, authorities said.

Two schools in Sonoma County were placed on lockdown Monday following what authorities called a “credible” threat. Approximately 220 students at Harmony Elementary and Salmon Creek Middle School, which share a campus in Occidental,

The Sonoma County Office of Education (SCOE) said a threat posted on social media by a student’s father caused two schools to go into lockdown Monday morning. SCOE said the online threat is being handled by the Sheriff’s Office in an ongoing criminal investigation.

Sonoma County schools have been safely reunited with their families after they were placed on lockdown Monday morning when an online threat was made against them by a student’s father.

A student's father made a threat on social media, which led to the lockdown of two schools in Sonoma County on Monday, officials say. Now the father has been arrested. Harmony Elementary School and Salmon Creek Middle School,

Two schools in Sacramento County were under shelter-in-place orders Monday afternoon after a phone threat, the Sacramento County Sheriff’s Office said.

Sonoma County schools have been safely reunited with their families, after they were placed on lockdown Monday morning when an online threat was made against them by a student's father.

Raw footage of Sonoma County Sheriff's deputies at the Harmony Elementary and Salmon Creek School campus following a threat that was made against the schools.