According to the Whittier Police Department, a caller from the Planned Parenthood office said the package was left unattended outside the building in the 7600 block of Greenleaf Avenue about 7 a.m.
No threats were reported, police said.
The bomb squad's robot approached a cardboard box on a sidewalk about 9:15 a.m. and appeared to remove several sheets of paper from inside. A deputy later placed a video camera in front of the box.
About 45 minutes later, police announced that no explosive device had been found and lifted the evacuation orders.