This Thursday, the conclusion of the US Secret Service investigation was announced after cocaine was found in the White House, the official residence of President Joe Biden.

That said three officials who were familiar with the investigation NBCNews that there was no usable forensic or video evidence to identify the person responsible.

A small plastic bag was found in a storage cubicle and underwent advanced testing, but no usable fingerprints or DNA were found.

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Biden was traveling at the time and an evacuation of a wing of the White House was ordered.

White House spokeswoman Karine Jean-Pierre suggested during a news conference that the drug could belong to a visitor, as it was found in a “busy neighborhood” where “tours” take place.

The Secret Service has been reviewing visitor logs and security cameras in the west wing of the White House, but has been unable to identify a suspect, a source told the network. CNN.

Another source explained to the outlet that the main hypothesis is still that the bag was left by a visitor in the entrance area of ​​the building, where they have to go through a security filter and deposit the phones in some cubicles.

Jean-Pierre responded to a reporter last week that it is “totally irresponsible” to suggest that the cocaine belonged to the Biden family since they were outside the presidential residence that weekend.

In the room where the bag was found, staff, contractors, as well as the military and some visitors who leave their personal items that are not allowed, were passing through.

“The only people who have been in and out of the Sit Room during this period were workers getting it ready to leave,” National Security Adviser Jake Sullivan said in a statement. nbc.