The White House underwent a short-lived lockdown Sunday afternoon.
The culprit: A couple of party balloons.
A U.S. Secret Service representative told CBS News that some party balloons had drifted over the White House complex. A couple balloons landed on the property and prompted a lockdown that lasted a few minutes.
The incident comes just days after authorities shut down the White House when a U.S. Secret Service agent shot an armed man near the executive mansion. The suspect, who had walked up to a White House security checkpoint carrying a pistol, was immediately taken into custody Friday.
President Obama was not at the executive mansion at the time of Sunday’s lockdown. He is on a trip to Hanoi, Vietnam.
CBS News’ Jillian Hughes contributed to this report.