The Pleasanton school district cancelled a sold-out dance at Foothill High School Saturday night after authorities learned of a threat that trouble could occur.
It was the first time Pleasanton's two high schools attempted to have a joint dance, prompted by school leadership classes. The long-planned, non-formal dance was open to juniors and seniors.
Myla Grasso, public information officer for the school district, said the threat was non-specific, in terms of names or event, but it was enough of a concern to cancel the event.
"Earlier today (Saturday), the Pleasanton Police Department received information about an alleged threat involving students," said school district spokeswoman Myla Grasso in an email message sent to students and parents Saturday afternoon.
"Because the police investigation is ongoing, PUSD administration made the decision as a precaution to cancel tonight's Foothill/Amador dance for juniors and seniors," Grasso explained.
Grasso added that the threat had nothing to do with a school rivalry.
"An auto-dialer message was sent out, and staff was present at the school to inform any students who arrived of the cancellation," she added. "Additional available information regarding this incident, along with any rescheduling of the dance, will be distributed next week."
In the past, police used a portable airport-style metal detector if there was a threat of danger at the high schools.