Racism: Racist Gunman kill three Blacks in Florida Store.

A gunman killed three black people in a racially motivated attack then killed himself in Jacksonville, Florida, the city's sheriff said.

The man, described as white and in his early 20s, entered a Dollar General store and opened fire, triggering a standoff with police.

Sheriff T K Waters said two men and a woman were killed by the gunman, who wore body armour and left manifestos.

Mayor Donna Deegan said it was a "hate-filled crime" driven by racist hatred.

The sheriff said the shooter - who has not yet been officially named - carried a lightweight semi-automatic rifle and a handgun.

He is believed to have acted alone and allegedly wanted to kill himself. He lived in Jacksonville's Clay County with his parents and left several messages about his intentions, Sheriff Waters said, including one to his parents and another to the media. The sheriff added that at least one of the guns had a swastika drawn on it.