The US Secret Service is investigating an incident where cocaine was found at the White House on Sunday night.
Secret Service agents found the suspicious powder in an area that is accessible to tour groups while doing a routine inspection.
The discovery in the West Wing, which contains the Oval Office and other working areas for presidential aides and staff, led to a brief evacuation.
President Joe Biden and his family were at Camp David in Maryland at the time.
The Secret Service will lead a full review of how the substance got into the White House, officials said.
Cocaine is a Schedule II drug under the Controlled Substances Act, meaning it has a high potential for abuse, according to the US Drug Enforcement Administration.
