US President Joe Biden has condemned the mass shooting at a supermarket in Buffalo, New York, that led to 10 deaths.
"A racially motivated hate crime is abhorrent to the very fabric of this nation," Biden said in a statement issued late on Sunday evening.
"Any act of domestic terrorism, including an act perpetrated in the name of a repugnant white nationalist ideology, is antithetical to everything we stand for in America," he added.
"Hate must have no safe harbour," the US President said.
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Ten people were killed by a gunman at a Tops Friendly Markets store in Buffalo on Saturday afternoon. Three others were wounded but are expected to survive, Xinhua news agency reported.
The gunman, an 18-year-old white male identified as Payton Gendron, is in custody and reportedly pleaded not guilty to the first-degree murder charge brought against him in court.
He wore military-style clothing and body armour and opened fire with a rifle while live-streaming the attack on a gaming platform.
Of the 13 victims, 11 are African-Americans while two are white, according to Buffalo Police Commissioner, Joseph Gramaglia.
Police also said the suspect drove for hours to the Tops supermarket located in a predominantly African-American neighbourhood.
The US Department of Justice is investigating the massacre "as a hate crime and an act of racially-motivated violent extremism," according to a statement.
Biden also grieved for the victims' families, saying that their lives "were senselessly taken".
"The First Lady and I are praying for the victims and their families, and hearts all across this country are with the people of Buffalo," he noted.