How is the FBI/Secret Service investigation relating to the cocaine found in the White House going?

Snippet of Article: "...the Secret Service received the FBI’s laboratory results, which did not develop latent fingerprints and insufficient DNA was present for investigative comparisons. Therefore, the Secret Service is not able to compare evidence against the known pool of individuals. The FBl's evaluation of the substance also confirmed that it was cocaine.

There was no surveillance video footage found that provided investigative leads or any other means for investigators to identify who may have deposited the found substance in this area. Without physical evidence, the investigation will not be able to single out a person of interest from the hundreds of individuals who passed through the vestibule where the cocaine was discovered. At this time, the Secret Service's investigation is closed due to a lack of physical evidence.

The U.S. Secret Service takes its mission to protect U.S. leaders, facilities, and events seriously and we are constantly adapting to meet the needs of the current and future security environment. ..."

Source: www.secretservice.gov

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