10/18/2012 12:41 pm ET Updated Oct 18, 2012

Sidwell Friends, Obama Daughters' School, Evacuated Due To Suspicious Package

WASHINGTON -- One of the campuses of the private school that Sasha and Malia Obama attend was briefly evacuated Thursday morning due to a suspicious package that turned out to be a child's backpack.

Washingtonian magazine reports that Sidwell Friends distributed this notice of the evacuation through its emergency notification system at about 11:30 a.m.: “This is an emergency message from Sidwell Friends School. Due to a suspicious phone call, the buildings on the Wisconsin Avenue campus have been evacuated. We will notify you when further information is available.”

D.C.'s Metropolitan Police Department told Politico that "that there is no evidence that the threat was directed at the First Family."

An all-clear was issued just before 11:50 a.m.

A parent told Washingtonian that just before noon, students were returning to campus.

This is a developing story...