July 10 (UPI) — An eighth suspect has been arrested and charged in an alleged plot to attack last month’s Ultimate Fighting Championship event held at the White House, federal prosecutors said.

The suspect was identified as 21-year-old Chandler Scaggs of Chapmanville, W.Va.

The Justice Department said in a statement that he and the other seven suspects were charged in an indictment returned Thursday in Columbus, Ohio, with two conspiracy counts: providing material support to terrorists and conspiring to murder government officials on government grounds. Jail records indicate that Scaggs was arrested Tuesday, with federal prosecutors saying he was taken into custody by the FBI in West Virginia.

Federal prosecutors allege that the eight suspects, who range in age from 19 to 32, were among nearly two dozen people conspiring to attack the White House’s Freedom 250 UFC event on June 14, staged in celebration of the United States’ 250th anniversary and President Donald Trump’s 80th birthday.

According to the indictment, the co-conspirators allegedly planned to attack the north side of the event with explosive-laden drones, which would force fight spectators to evacuate to the south, where stationed snipers would open fire on the fleeing crowd.

Prosecutors alleged that Scaggs was to be one of the snipers.

The indictment states that the eight defendants began plotting the alleged attack in May, with the conspiracy to provide material support to terrorists stemming from allegations that they worked together to procure money, firearms, ammunition, body armor, drones and other resources to further the plot. The charge is punishable by up to 15 years’ imprisonment.

They are alleged to have developed plans and encouraged one another in online chat groups and forums on encrypted applications, such as Signal, and on social media platforms, including TikTok and Instagram.

The indictment states that the second charge of conspiracy to murder government officials stems from allegations that the suspects planned to murder Trump, Vice President JD Vance and “other high-value targets” as well as Elon Musk and Israeli Prime Minister Benjamin Netanyahu, whose attendance at the event was not immediately confirmed. If convicted, the charge carries a potential penalty of up to life in prison.

The first five suspects arrested and charged in the scheme were taken into police custody last month after the parents of one of the suspects, 19-year-old Tycen Proper, alerted police to their son’s purchase of weapons and online activities.

Court documents state the group’s alleged grievances appear to be purported government corruption and U.S. lawmakers’ involvement with Israel.

As part of the scheme, Proper was allegedly supposed to pick up Scaggs and drive to Washington, D.C., for the event.

Prosecutors said that after Proper’s arrest, Scaggs allegedly indicated to the rest of his co-conspirators that he was still willing to carry out the attack and made arrangements with a second co-conspirator, who was not named, to pick him up.

The Thursday indictment follows earlier criminal complaints filed against the original seven defendants.