Law enforcement officials arrested more than 600 people after protesters blocked Interstate 94 in Minneapolis late Wednesday and early Thursday.
The Minnesota Department of Public Safety (DPS) said the arrests by State Patrol troopers and city police were necessary to clear the interstate of a people who stopped freeway traffic.
"No force or chemicals were used, and no protesters or law enforcement officers were injured during the incident," the DPS said in a statement issued Thursday.
However, videos on social media showed Minneapolis police releasing pepper spray at least once and two officers using a bicycle to push back demonstrators who had congregated near the freeway.
Marchers gathered early Wednesday evening for a protest, led by multiple local organizations, dubbed "Don't Let Trump Steal the Election." Marchers went from downtown streets to I-94, where they caused closure of the freeway from Interstate 35W east to Hwy. 280. The interstate was cleared and reopened at 1:23 a.m. Thursday, the DPS said.
The agency said 646 people were cited, arrested and released. Six vehicles were towed.
"State law makes it illegal for pedestrians, bicyclists or other nonmotorized traffic to be on a freeway. In addition, walking on the freeway is very dangerous for pedestrians and drivers, especially after dark," the DPS statement said.
The march was organized by the Twin Cities Coalition for Justice 4 Jamar, which said it had nearly 1,000 participants.