The suspects, identified as William Lee Spartacus Falkner and Jordan W. Rincker, have been charged separately with conspiracy to commit murder.

Falkner was arrested on June 19 and charged in the U.S. District Court for the Western District of Washington. Rincker was charged in the Western District of Missouri.

"Law enforcement continues to do what it does — move to disrupt and hold accountable those allegedly plotting to do harm on the White House Grounds on June 14," Acting Attorney General Todd Blanche said.

"Each and every day, the FBI and its federal, state and local law enforcement partners, along with U.S. Attorneys' Offices across the country, safeguard American communities and our nation's security," he added.

FBI Director Kash Patel said the arrests were the latest result of a coordinated investigation involving federal, state and local agencies.

"In just over a week, we have executed a multi-state operation that could not have been possible without our Justice Department prosecutors, the FBI's Counterterrorism Division, Secret Service, and our state and local law enforcement partners," Patel said.

Assistant Attorney General for National Security John A. Eisenberg described the alleged plot as an apparent attempt to destabilize the U.S. government.

Allegations against Falkner

According to court documents filed in Washington state, investigators first learned of the alleged plot after the parents of Ohio resident Tycen C. Proper alerted authorities about their son's weapons purchases and concerning online activities.

A review of digital communications led investigators to Falkner and several other alleged conspirators.

Authorities allege Falkner possessed expertise in manufacturing and operating drones. Encrypted communications reportedly show discussions about attaching explosives to drones and deploying them to maximize casualties.

Investigators say the alleged plan involved using explosive-laden drones to attack one side of the event venue, forcing attendees to flee toward another area where armed conspirators would allegedly open fire using sniper rifles and other weapons.

Court filings further state that Falkner and another suspect referred to the planned operation as a "work trip." Following the arrests of several alleged conspirators, messages indicated that the "work trip" had been cancelled.

One arrested suspect allegedly told investigators that the group's objective was to create enough chaos to trigger the overthrow of the U.S. government.

Conspiracy to commit murder carries a potential sentence of up to life imprisonment.

Allegations against Rincker

According to a separate criminal complaint filed in Missouri, Rincker allegedly accepted USD 1,200 in cash from co-conspirator Abraham Hermosillo Alvarez, 31, of Omaha, Nebraska, to distribute funds among individuals involved in the alleged attack plot.

Investigators allege Rincker sent USD 100 via CashApp to Bryan Omar Roa, 24, of Calimesa, California, to cover fuel expenses for a trip to Washington, D.C., where Roa was allegedly expected to transport a drone operator linked to the plot.

Alvarez and Roa were arrested and charged last week in connection with the alleged conspiracy.

Authorities also allege that Rincker communicated with co-conspirators through an encrypted messaging platform and provided Alvarez with a 12-gauge pump-action shotgun during an in-person meeting in Omaha.

In exchange, Alvarez allegedly supplied Rincker with a ballistic plate, face shield, night-vision goggles, binoculars, a mini-computer, a 3D printer, and related materials. Prosecutors claim the equipment was intended to support drone manufacturing.

During searches of Rincker's residence and storage unit, investigators recovered multiple firearms, including a 9mm pistol, an AR-style rifle, a .22-caliber rifle, a 3D-printed handgun and magazine, ammunition, a gas mask, night-vision equipment, ballistic protection gear, thermal imaging devices, electronic equipment, and 3D-printing materials.

Investigators also seized a Muzi Works off-grid mesh networking system, which allows users to exchange secure messages and location data without relying on cellular networks or internet connectivity.

The FBI is continuing its investigation into the alleged plot.