SALT LAKE CITY (AP) — Protests continued into the night in Salt Lake City on Saturday despite a curfew issued by the mayor and National Guard troops deployed by Utah’s governor.

Police officers broadcast announcements that the 8 p.m. curfew had taken effect in hopes that demonstrators would voluntarily leave the downtown area, Salt Lake City Police Chief Mike Brown said. Police were prepared to give people time to leave, but they planned to arrest people who refused to comply, Brown said.

“It is time to go home,” he said in a news conference after the curfew took effect.

The curfew by Salt Lake City Mayor Erin Mendenhall was scheduled to last until 6 a.m. Monday.

Police officers from across Utah and up to 200 Guard troops were deployed to rein in what Gov. Gary Herbert called an “escalating situation.”

“We condemn violence and looting,” Herbert wrote, adding, “I once again call on all who are protesting to do so peacefully.”

Six people had been arrested by Saturday night, Brown said. One police officer was injured after a protester struck the officer on the back of the head with a baseball bat, and two other officers have been hospitalized because of heat exhaustion, he said.

The police chief said he didn’t have any reports of protester injuries.

What was billed as a “car caravan for justice” began with people in vehicles circling the Salt Lake City Police Department with signs that said “Black Lives Matter” and “Justice for George Floyd.”

People on foot smashed eggs against the windows of the police station. Messages were written on the building that said, “We can’t breathe” along with expletives directed at police.

Graffiti was also written on the state Capitol.

Later in the afternoon, protesters flipped over a police vehicle and set it on fire. Men carrying rifles stood on top of the wreckage.

Police used tear gas to disperse the demonstrators.

Elsewhere, a man aimed a bow and arrow at a group of protesters before he was tackled. People then flipped over the man’s car and set it on fire, the Deseret News reported.

During the day, protesters marched through downtown Salt Lake City to the state Capitol chanting, “We can’t breathe,” which Floyd said while he was in police custody.

A separate rally in Ogden drew about 1,000 people, according to the Salt Lake Tribune.

“(We want to do) anything we can do as a people to stop the systematic bias and racism against people of color in our nation that’s gone on for 400 years,” Ogden resident Keyvin VanDyke said.

Floyd died after a Minneapolis officer pressed his knee into his neck for several minutes even after he stopped moving and pleading for air, leading to protests in cities across the U.S.