Former President Donald Trump stated that he believes the Secret Service is aware of who possessed the package of cocaine discovered at the White House.

In an interview with "Sunday Morning Futures" host Maria Bartiromo that aired on Sunday morning, Trump expressed skepticism that officials could not know who possessed the substance located near the Situation Room's West Executive entrance, according to a report by Fox News.

"You know how many cameras they have opposite the front door of the Situation Room?" Trump asked.

"I’ve gotten to know the Secret Service really well, and I can’t speak more highly of these people, they are incredible people," Trump added.

"And I believe that they know everything – they're really smart and good at what they do."

The bag of cocaine was discovered at the White House in July, and the Secret Service disclosed last week that they were unable to determine who owned it.

In the Sunday interview, Trump expressed extreme skepticism regarding the outcome of the investigation.

"I don't think it’s possible for bags of cocaine to be left in a certain area, in the Situation Room," he added. "I’m not talking about five blocks away, the Situation Room, where you decide on war, where you decide on nuclear."

The Secret Service said in a statement Thursday that "The substance was located inside a receptacle used to temporarily store electronic and personal devices prior to entering the West Wing."

They went on to say that their investigation "included a backwards examination that spanned several days prior to the discovery of the substance and developed an index of several hundred individuals who may have accessed the area where the substance was found.

"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."

Investigators developed "a pool of known persons for comparison of forensic evidence gleaned from the FBI’s analysis of the substance's packaging," the Secret Service said.

The investigation"did not develop latent fingerprints and insufficient DNA was present for investigative comparisons," they added. "The investigation included a methodical review of security systems and protocols."