The Secret Service concluded their investigation into the cocaine bag without identifying any suspects.
Surveillance footage of the area in the West Wing also was no help in finding the culprit.
The Secret Service has concluded their investigation into the incident without identifying any suspects, CNN and the Associated Press were the first to report.
The cocaine was confirmed as cocaine by subsequent lab tests, and the Homeland Security's National Biodefense Analysis and Countermeasures Center eventually confirmed it posed no actual threat.
Surveillance footage of the area also proved inconclusive, CNN reports, and the Secret Service wasn't even able to determine what day the drugs were left behind.
Persons:
wasn't
Organizations:
Service, CNN, Associated Press, White, Homeland, Countermeasures Center
Locations:
Wall, Silicon