Mourners in Buffalo describe shooting at grocery market by a white gunman as a "military-style execution" and say racist messaging is "spreading like wildfire," especially online.

President Joe Biden condemns the racist extremism and says
President Joe Biden condemns the racist extremism and says "the hate that remains a stain on the soul of America." (AFP)

Grieving residents from Buffalo have held vigils after a white gunman who officials have branded "pure evil" shot dead 10 people at a grocery store in a "racist" rampage.

The police commissioner for the US city in western New York, Joseph Gramaglia, told reporters on Sunday the 18-year-old suspect did "reconnaissance" on the predominantly Black area surrounding Tops Friendly Market and drove there from his home town of Conklin, more than 322 kilometres away.

Wearing heavy body armour and wielding an AR-15 assault rifle, the shooter killed 10 people and wounded three others –– almost all of them Black –– before threatening to turn the gun on himself. Police said officers talked the gunman down before arresting him.

The suspect, identified as Payton Gendron, was arraigned late on Saturday on a single count of first-degree murder and held without bail, the Erie County district attorney's office said. He pleaded not guilty.

"The evidence that we have uncovered so far makes no mistake that this is an absolute racist hate crime," Gramaglia said on Sunday, adding Gendron had a rifle and shotgun in his car.

Buffalo Mayor Byron Brown was unequivocal about the shooter's motivations: "This individual came here with the express purpose of taking as many Black lives as he possibly could."

Gramaglia said the gunman just last year made "generalised threats" at his high school, after which state police referred him to a hospital for a mental health evaluation that lasted approximately one day and a half.

He was then released.

READ MORE: Several killed in ‘racially motivated’ shooting at New York supermarket

'Domestic terrorism'

Earlier on Sunday residents held a vigil outside the store, as New York Governor Kathy Hochul and state Attorney General Letitia James addressed a church service.

Hochul, a Buffalo native, described the shooting as a "military-style execution" and said racist messaging was "spreading like wildfire," especially online.

In angry and mournful tones, speakers at the event decried easy access to powerful guns and the latest eruption of racist violence, in what has become tragically routine brutality nationwide.

Just hours later in California, a shooting at a church southeast of Los Angeles left one person dead and four others "critically wounded," according to the Orange County Sheriff's Department.

In Washington, President Joe Biden –– whom the White House said would visit Buffalo on Tuesday –– condemned the racist extremism and "the hate that remains a stain on the soul of America."

The attack evoked memories of recent US history's most devastating attacks, including a white man's 2015 massacre of nine worshippers in a South Carolina Black Church, and the 2019 attack by a white man in Texas that claimed 23 lives, most of them Latino.

Attorney General James, who is Black, described Saturday's murderous assault as "domestic terrorism, plain and simple."

She paid tribute to the victims who included shoppers and store workers, describing an elderly woman who planted trees on her block, and a woman who was food shopping after visiting her husband at the nursing home.

"I held in my arms a young lady who worked at Tops, who was so afraid that she was about to die, who witnessed the bloodshed, who shaked and quivered in my arms," James said.

"Who is afraid for her community, afraid also for herself."

Denise Walden, a Buffalo resident, voiced fear that she "can't go to the grocery store around the corner from my house because I might not get home to my kids safe."

Derryl Long, who was born in Buffalo, told the AFP news agency he "can't comprehend what was going through this man's mind."

"He knew it was a Black community," the 67-year-old continued. "It just hurts."

'The poison of America'

The gunman shot four people in the store's parking lot, three of them fatally, before entering the supermarket.

Among those killed inside was a retired police officer working as a security guard. He fired several shots at the assailant before being shot himself, police said.

Along with state charges, the rampage is being investigated as a federal hate crime "perpetrated by a racially motivated violent extremist," Stephen Belongia, special agent in charge of the FBI's Buffalo field office, told reporters.

Media reports linked the shooter to a 180-page manifesto that described a white supremacist ideology and laid out a plan to target a mainly Black neighborhood.

A spokesperson for Twitch told AFP the shooter used the platform to broadcast the attack live, and that the streaming service had removed the video within "two minutes."

Along with mentioning the South Carolina church shooting, the gunman reportedly said he had been "inspired" by the terrorist who killed 51 people in a New Zealand mosque in March 2019.

In a video call to True Bethel Baptist Church, New York Senator Chuck Schumer called racism "the poison of America" and urged fellow lawmakers to "finally ban the weapons of war from our streets."

But facing a powerful pro-gun lobby, past congressional efforts at tightening the nation's gun laws have generally fallen short –– even after horrific shootings.

READ MORE: 'Multiple victims shot' at church in southern California

Source: AFP