Megyn Kelly

Investigators now examining a much larger network of potential participants.

According to federal court filings, the plot calling for drones carrying explosives is

to detonate near the north side of the White House grounds, triggering panic and forcing thousands of spectators and government officials to flee south.

That's when investigators allege a team of snipers would have been waiting to open fire on the escaping crowd.

Federal law enforcement sources tell Fox News and the New York Post that a second wave of attackers then planned to storm the White House gates.

Federal authorities first learning about the alleged attack because one suspect's mother alerted police.

According to an FBI affidavit, the mother of 19-year-old Ohio suspect Tyson Proper contacting local authorities on June 10th.

alarmed by her son's recent firearm purchases and his communications with people online.

The complaint alleging Proper spent roughly $3,000 in graduation money on guns, ammo, magazines, body armor, and other equipment.

His father telling investigators Proper quit his job and planned to meet people he knew from the internet to conduct missions and recon.

Investigators interviewing Proper on June 11th

at a medical facility where prosecutors allege he admitted

helping to plan a coordinated attack against the U.S.

government.

According to a DOJ press release, Proper revealing that members of the group began communicating around March, before the more serious participants moved their planning onto an encrypted messaging service.

Court filings reviewed by the Associated Press describe encrypted signal conversations involving roughly 20 participants, along with detailed maps, escape routes, and discussion of a safe house.

In addition to Proper, the FBI arresting 32-year-old Michael Allen Thomas and 24-year-old Brian Omar Roa in California, 31-year-old Abraham Hermosillo Alvarez in Nebraska, and 32-year-old Daniel Eskridge in Missouri.

Federal searches allegedly uncovering rifles, handguns, extended magazines, ammo, and tactical equipment at several of the suspects' homes.

Prosecutors identifying Alvarez as a key organizer, accusing him of mapping drone launch sites and sniper positions around the White House.

along with an escape route and a safe location where participants could regroup.