Threat prompts Wright City R-II to issue lockdown Wednesday morning

Threat prompts Wright City R-II to issue lockdown Wednesday morning

No arrests were made at Righetti High School. However, authorities say those rumors were not true, and there were no guns found on campus.

The lockdown was lifted around 12:45 p.m.

All Atascadero Unified School District schools were ordered to shelter in place Wednesday morning after a high school student allegedly posted threats on social media.

Parents were notified of the lockdown via email and the district's automated calling system.

At the time of publication it was not confirmed if the school would remain closed and for how long.

Klein said about 150 students were pulled out of class after the lockdown. They say the lockdown was necessary so they could conduct an investigation.

According to a Sheriff's Office release, the text apparently threatened violence during the planned National School Walkout to commemorate the one-month anniversary of the school shooting in Parkland, Florida.

The Santa Barbara County Sheriff's Office says the lockdown is a precautionary measure but did not provide specifics about why it was needed.

The school resource deputy assigned to the campuses was assisted by additional sheriff's deputies and personnel from the California Highway Patrol and Santa Maria Police Department.

This is a developing story and will be updated with new information as it becomes available.