Sister of Dallas Gunman: 'I Keep Saying It's Not True'

Nicole Johnson added: "Those that knew him know this wasn't like him."

The sister of Dallas gunman Micah Xavier Johnson has become the first family member to break their silence on Thursday’s shooting.

Read: Suspect in Dallas Shooting That Left 5 Officers Dead 'Wanted to Kill White People, Especially White Cops'

Nicole Johnson took to Facebook to express her shock. “I keep saying it’s not true," she wrote. "My eyes hurt from crying.”

She later deleted the post, but added: “The news will say what they think, but those that knew him know this wasn’t like him. This is the biggest loss we’ve had.”

Micah Johnson, 25, shot and killed five officers while peaceful protests were underway in the city. He was later killed by police who blew him up using a robot.

The Dallas protests were in response to the recent killings of two black men by police officers in Minnesota and Louisiana. 

Read: Pictured: Newlywed Transit Officer and Military Veteran Among 5 Dallas Sniper Victims

Following her initial comments about her brother, Nicole added on Facebook: “White (people) have and will continue to kill us off. The only difference is they serve the system hiding behind that blue suit and get off easy murdering civilians.”

She later told her Facebook friends she would be shutting down the page.

Her brother, who was from Mesquite, Texas, reportedly had no criminal record or no known ties to terrorism, and told police he was acting alone in the shooting. He also claimed to be a U.S. Army veteran.

Watch: Hero Mom Wounded While Shielding Her Sons From Gunfire During Dallas Sniper Attack