Cocaine was discovered at the White House on Sunday night, and the US Secret Service is now looking into it.
A temporary evacuation resulted from the finding in the West Wing, which houses the Oval Office and other workspaces for presidential advisers and personnel.
During a regular examination, Secret Service personnel discovered the strange substance in a location that is open to tour groups.
At the time, Camp David in Maryland was where President Joe Biden and his family were staying.
A senior law enforcement official told the BBC’s US partner CBS News the substance was found in a storage facility routinely used by White House staff and guests to store mobile phones.
The White House complex was closed as a precaution around 20:45 local time (00:45 GMT) on Sunday after it was discovered.
A preliminary test later confirmed the substance was cocaine.
According to insiders, the Secret Service will oversee a thorough investigation into how it entered the White House. To find out who had access to the location where it was found, they stated that cameras and entrance logs would be inspected.
According to the US narcotic Enforcement Administration, cocaine is classified as a Schedule II narcotic under the Controlled Substances Act, which indicates that it has a significant potential for abuse.
The Oval Office and the Situation Room are located in the West Wing, a sizable, multi-level area of the White House that houses the president of the United States’ offices.
Along with hundreds of other employees who have access, it also houses the offices of the vice president, the White House chief of staff, the press secretary, and others.