UPDATE: The Palo Alto Police Department’s Twitter feed is providing updates at https://twitter.com/PaloAltoPolice. PAPD emphasizes there has been no violence at Palo Alto High School, rather a phoned-in threat to the police department, specific to the school and not mentioning other schools. Police are investigating.
Palo Alto Police Department is investigating a threat of violence directed at Palo Alto High School. Out of an abundance of caution, expect a heavy police presence in the area while Palo Alto PD investigates. The school is on lockdown as a precaution. Please stay away from the area. Updates when available at https://police.stanford.edu/ or http://emergency.stanford.edu/