Donald Trump will visit Kenosha, Wisconsin – the city that has seen unrest since a white police officer shot a black man in the back – on Tuesday, a White House official has said.
Meanwhile, police in Portland, Oregon, said a person was shot dead during clashes between supporters of Mr Trump and counter-protesters.
It is not clear if the attack was linked to fights that broke out as a convoy of about 600 vehicles was confronted by demonstrators in the city.
Mr Trump revealed he would probably visit Kenosha during a visit to hurricane-ravaged parts of Louisiana and Texas on Saturday.
It was later confirmed by a White House official, who said the US president will meet police officers and assess damage in the city when he visits.
Every night since Mr Blake’s shooting, protesters have marched in Kenosha with some demonstrations turning violent resulting in buildings and vehicles being damaged and set on fire.
On Tuesday, two protesters were shot dead after a teenager opened fire in the middle of the street with a semi-automatic rifle.
Kyle Rittenhouse, 17, from Antioch, Illinois, has been charged with first-degree murder and a host of other offences.
A state of emergency was declared and more than 1,000 members of the National Guard have been deployed to help keep the peace.
Meanwhile, about 1,000 people joined a mile-long march in Kenosha on Saturday night, chanting “Black Lives Matter”, “No Justice, No Peace” and “seven bullets, seven days” – a reference to the number of times Mr Blake was shot.
During the rally Mr Blake’s father, Jacob Blake Snr, gave an impassioned call for changing a system he described as fostering police brutality and racial inequalities.
“There were seven bullets put in my son’s back… hell yeah, I’m mad,” he said.