Dallas sniper 'was not the same' after time in Afghanistan, next-door neighbour says

In her Mesquite, Texas home, about 20 kilometres east of Dallas,the next-door neighbour of Micah Johnsonspoke quietly about the man she rememberedas a sweetkid, but whoshe said becamea different personafter his time in Afghanistan.

The neighbour, who says she has knownJohnson since he was a teenager, did not want to be identified, but agreed to speak brieflyabout the 25-year-old, now responsible for the deadliest attack on law enforcement in the city's history, and the deadliest day for law enforcement in the U.S. since the Sept. 11, 2001 attacks.

"He was a good kid. He was not the same when he came back from Afghanistan," she said.

• Micah Xavier Johnson, Dallas police attack gunman, was sent home from Afghanistan
• Dallas shooting: Gunman acted alone, officials say
• CBC IN DALLAS:People flock to police headquarters to honour slain officers

Johnsonchanged, she said. He was quieter, more reclusive and withdrawn,and would talk about the horrors of war.Before his tour, he was sweet and quiet, and would help other kids in the community, a neighbourhood she described as mixed, where people of all races and religions live.

• 'He has a gun, run': Woman shot by sniper in Dallas recalls officers who helped her

"And that's why everybody is so shocked."

For six years starting in 2009, Johnson served in the Army Reserve as a private first class with a specialty in carpentry and masonry, the military said.

According to The Associated Press, on May 2014, six months into his Afghanistan tour, he was accused of sexual harassment by a female soldier and sent home.

Police say Johnson, who was killed by a robot armed with a bomb, had declared he wanted "to kill white people, especially white police officers." HisFacebookpage revealed thathe "liked" groups that includedthe African American Defence League and the New Black Panther Party, which was founded in Dallas.

• What we know about the slain Dallas officers
• Full CBC.ca coverage on the Dallas tragedy

Johnson also "liked" the Nation of Islam and the Black Riders Liberation Party, which the Southern Poverty Law Center describedas "hate groups."

In a statement, police saidJohnson had no criminal history and that "others had identified him as a loner."

• The Sunday Edition: Fear, division and race in America

Since the shootings, his home hadbeenbeen the scene of an intensive investigation launched by police, whofoundbomb-making materials, ballistic vests, rifles, ammunition and a personal journal of combat tactics.

But on Saturday, his residenceand the neighbourhood was relatively quiet, save for a scattering of media.

A bouquet of flowers was left on the doorstep ofJohnson's homewith a note that read: "Praying foryour family. Remember this too shall pass. Praying for your comfort and peace."

'I even cried for him'

"I cried as much for the police officers as I did for his family," said his neighbour. "I even cried for him because what was that kid going through that he would do such a horrific thing? A loving kid, a loving family, what was he going through that triggered him?"

• CBC IN DALLAS'Place is like a ghost town': Downtown Dallas cordoned off as crime scene
• Obama says Americans are 'rightly outraged' at Dallas shootings
• Black Lives Matter protests held as more suspected revenge shootings reported

More details emerged Saturday about Johnson's background with weapons' training.A neighbour reported to investigators that Johnson had been seen practicing some sort of military drill in his backyard, said Clay Jenkins, the Dallas County judge, the county's most senior elected official.

Johnsonalsoreceived instruction at the Academy of Combative Warrior Arts in the Dallas suburb of Richardson about two years ago, the school's founder and chief instructor, Justin J.Evermantold the Associated Press.

The private self-defence schoolteaches special tactics, including "shooting on the move,"in which an attacker fires and changes position before firing again.

Mike Rawlings, the mayor of Dallas, on Friday said officials believed Johnson was the lone shooter, and that he'd been on the move between locations.