An Anza man charged with helping to plan and carry out attacks on protesters with a Southern California-based white supremacist group surrendered to authorities Sunday, officials said.

Aaron Eason, 38, turned himself in at the Federal Bureau of Investigation’s local headquarters in Westwood about 2 p.m., said agency spokeswoman Laura Eimiller.

Aaron Eason, 38, who was charged in federal criminal complaint last week for allegedly engaging in activity promoting violence & civil disorder in furtherance of white supremacist ideology has surrendered to the FBI. Mr. Eason will be in court for an initial appearance on Monday. pic.twitter.com/bYNo39C0Y4 — FBI Los Angeles (@FBILosAngeles) October 28, 2018

Eason was wanted after he and three other alleged members of the extremist Rise Above Movement were charged last week by the U.S. Justice Department with assaulting protesters, journalists and a police officer at political rallies last year across the state. Two of the other men were arrested at their South Bay homes on Wednesday and one was taken into custody after he arrived from Central America at Los Angeles International Airport Oct. 21, Eimiller said.

According to a criminal complaint, text messages show Eason recruited a 29-year-old Lawndale man, Michael Paul Miselis, to the Rise Above Movement when they met at a pro-Trump rally at Bolsa Chica State Beach in Huntington Beach in March 2017. Eason invited Miselis to another rally the following month in Berkeley, as well as a combat training session in a San Clemente park ahead of the event, the complaint states.

“We’ll probably have equipment for shield and stick training and our formation tactics ready,” Eason allegedly wrote in one message.

According to the Department of Justice, Rise Above Movement members prepared for their violent attacks by practicing boxing and mixed martial arts in public parks; and shared photos on social media promoting their extremist ideology.

Miselis was one of four alleged Rise Above Movement members arrested in a first round of indictments earlier this month in connection with assaults at the infamous August 2017 “Unite the Right” rally in Charlottesville, Va., and other rallies.

According to last week’s complaint, text messages and credit card records show Eason rented a van to take 12 to 15 people to the April 2017 rally at Martin Luther King Jr. Civic Center Park in Berkeley. He and other Rise Above Movement members were allegedly captured in photos and video aggressively confronting counter-protesters, wearing skeleton masks to partially hide their faces and tape on their hands like mixed martial arts fighters.

One of the group’s alleged founders, 28-year-old Robert Rundo of Huntington Beach, was arrested for punching a Berkeley police officer twice in the head, the complaint states. The officer had knocked Rundo down to stop him from punching a “defenseless” person in the head, authorities said.

Five months after the rally, Eason texted Miselis saying he was “back in a position to go hard with activism. I got sidetracked after Berkeley,” the complaint says.

Miselis allegedly replied, “for the time being I think everyone is laying a little low on account of [Charlottesville] fallout.”

Eason is due in court on Monday, according to the FBI.