The Secret Service on Thursday still had no suspects in the investigation into who brought cocaine into the White House over the weekend, and it's not clear whether a culprit will ever be found, a source told Fox News Digital.
The source, who is familiar with the Secret Service probe, told Fox News Digital on Thursday that it will take time to review the evidence and said officials admitted there is a possibility they will not be able to determine who brought the drugs into the White Houseon Sunday.
The source added that multiple tests have been run on the cocaine container, including DNA and fingerprints tests.
The investigation is expected to be concluded early next week, and the source provided more detail on where exactly the drugs were found – in a phone cubby of an entrance off West Executive Avenue, which is in the lower-level West Wing lobby.