OCCIDENTAL, Calif. - 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.

Students at two schools in western Sonoma County have been reunited with their families Monday after threats to the campuses prompted a lockdown earlier in the day.

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. Lee Clark,