Meanwhile in Seattle, protesters clashed with Seattle police amid a wave of public anger over the Trump administration's planned "surge" of federal agents into major cities.

Demonstrators gather near the Austin Police Department in Austin, Texas to protest the death of George Floyd on Memorial Day, June 4, 2020.
Demonstrators gather near the Austin Police Department in Austin, Texas to protest the death of George Floyd on Memorial Day, June 4, 2020. (Eric Gay / AP)

One person was killed when several shots were fired amid a Black Lives Matter protest in downtown Austin, Texas, on Saturday, authorities said.

Footage posted during a Facebook Live showed the moment when several shots rang out in the Texas capital as about 100 people marched and chanted, "Fists up! Fight back!"

Austin police and emergency medical services said on Twitter that one person was killed during the shooting. There were no other deaths or people shot, according to the EMS department.

Initial reports indicate the suspect was carrying a rifle and shot at the victim, who was in his car, police told a briefing. The suspect has been detained, they said.

Protests against racism and police brutality were sparked worldwide following the May killing of African-American George Floyd, who died in police custody in Minneapolis. Floyd died after a police officer knelt on his neck for nearly nine minutes while detaining him.

READ MORE: US police fire tear gas on protesters amid fresh violence in Portland

Protesters clash with Seattle police

Meanwhile, police in Seattle used stun grenades and pepper spray against protesters who set fire to construction trailers outside a youth jail, amid a wave of public anger over President Donald Trump's planned "surge" of federal agents into major cities.

The sounds of repeated small detonations rang out in the streets of the city in Washington state, and smoke rose from an area where demonstrators had set fire to trailers by a construction site for the youth detention facility.

Demonstrators slashed car tires and smashed trailer windows.

Police in riot gear faced off against the demonstrators, some of whom held up umbrellas against falling pellets of pepper spray.

The Seattle Times newspaper quoted police as saying 16 people were arrested on suspicion of assault against officers, obstruction and failure to disperse.

The latest spasm of violence came after police and federal agents fired tear gas and forcefully dispersed protesters further south in Portland early on Saturday, also in anger over Trump's heavily-criticised "surge" of security forces.

READ MORE: Police ignored George Floyd's warning he was dying and couldn't breathe

Source: Reuters