Colton School District was apparently part of a wide-ranging bomb hoax that incorporated Oregon synagogues and schools Monday morning.

The FBI is investigating the string of threats that were delivered via email Dec. 11, but indicated there’s nothing to suggest the threats were legitimate, with no evidence of bombs planted on any campus.

Colton School District sent a message to parents just after noon on Dec. 11 informing them that their students would be released early from school, and that all activities in the afternoon and evening would be cancelled.

They were not alone as Arlington, Bandon, Corbett, Central Linn, and Cascade school districts were also the recipient of emails that threatened violence on the campus. The email claimed that explosive devices were planted somewhere on the campus. No evidence of anything dangerous was reported found anywhere.

“During the recent incident we had local Clackamas County Sheriff’s deputies here in a short period of time. We had another deputy onsite within five minutes and our security consultant was here within 15 minutes,” Colton School District Superintendent Dave Kline said during the Dec. 11 board meeting. “With interaction from our principals and secretaries we had a great plan in place to keep students safe and to have them ready to be picked up by their parents or their registered emergency contact. Our bus drivers were ready to transport students to their homes or to the homes of their emergency contact as needed. Jody Ogden (dispatcher for Colton bus transportation) called in the bus drivers who were on their free time.”

Two Portland synagogues, Neveh Shalom and Beth Israel, were similarly alerted to possible dangers.

At Colton, parents were asked not to tie up phone lines by calling the school and that the emergency plan that had been filled out during registration would be followed.

“CCSO said to keep communication narrow and focused until the investigation is complete,” Kline said “There is information they want to protect during the active investigation process. This incident was not just targeted toward our district.”