San Ramon middle school on lockdown due to shooting threat

Iron Horse Middle School in San Ramon has been placed on lockdown Thursday morning after the discovery of graffiti threatening a school shooting planned for noon.

According to a statement on the district’s website, the graffiti was found on a bathroom wall and it said “school shooting at 12 p.m.”

Officials with the San Ramon Valley Unified School District say police are investigating the threat, but they don’t believe the campus is in imminent danger.

Meanwhile, the campus remains under lockdown “out of an extreme abundance of caution,” district officials said

Additional information will be released to the public when it becomes available, according to the district.