The U.S. Secret Service is looking into reports that a white powder was discovered in the White House on Sunday, shortly after Hunter Biden’ visit.

The discovery came two days after Mr Hunter, U.S. President Joe Biden’s son, was spotted leaving the White House on his way to Camp David with his father for the long holiday weekend.

The material was discovered by members of the Secret Service’s Uniformed Division while conducting routine sweeps through the premises, according to Anthony Guglielmi, a spokesperson for the agency.

A report from a responding fire unit said the substance tested positive for cocaine.

A firefighter from the D.C. department’s hazardous materials squad can be heard phoning in the test results in audio footage posted to openmhz.com.

Mr Guglielmi stated that the drug is being tested to determine its identity and that “an investigation into the cause and manner” of how the substance entered the White House was underway.

The finding, he added, triggered a brief evacuation of the building, but the D.C. fire department decided the material did not pose a hazard.

Trolls speculate that the illegal substance came from the president’s addict son.

However, there could be multiple suspects because the White House library is part of the regular public tour.