The U.S. Secret Service tweeted out that they are currently investigating reports of a suspicious package on Pennsylvania Avenue.
Traffic in the area has been impacted. We will have more information as it becomes available.
BREAKING: Secret Service personnel are responding to reports of a suspicious package in the area of Penn Ave & Lafayette Park. Pedestrian & vehicular traffic impacted.
— U.S. Secret Service (@SecretService) March 12, 2018
The White House is reportedly on lockdown due to the reported package. (source)
The all-clear has been given at the White House. The package has been deemed safe. (source)