(CNN) -- The U.S. Embassy in Stockholm, Sweden, was briefly evacuated Wednesday after an alarm was raised over a suspicious envelope containing white powder, Stockholm police said.
Stockholm police are moving the envelope to a secure location in order to examine it, police spokesman Albin Navery said.
"The embassy has been evacuated and we are working with Swedish authorities to investigate the incident," a U.S. State Department official told CNN. All employees are accounted for, the official said.
The all-clear has now been given and staffers have begun to return to the building, CNN affiliate TV4 said.
CNN's Saskya Vandoorne and Jamie Crawford contributed to this report.