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. What we knowHarmony Elementary School and Salmon Creek Middle School,

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,