The officer knelt on the neck of George Floyd for eight minutes has been taken into custody in connection with his death.
The arrest of Derek Chauvin was announced by Minnesota DPS Commissioner John Harrington.
Hennepin County Attorney Mike Freeman has said he will announce new developments in the Floyd case at 1 p.m., suggesting that criminal charges may soon follow.
Chauvin, a 19-year veteran of Minneapolis PD, was fired on Tuesday following Floyd’s death on Monday.
The arrest was made by the Minnesota Bureau of Criminal Apprehension, which has been conducting the investigation into Floyd’s death.
Video taken at the scene showed Chauvin holding his knee to Floyd’s neck for several minutes, with Floyd saying “help” and “I can’t breathe” while he was held.
Three other officers at the scene have also been fired. At this stage there are no word on arrests of these men.
The state attorney says the fired officers are not cooperating with law enforcement.
While the National Guard has deployed 500 armed troops to the city of Minneapolis to prevent any further rioting.