BALTIMORE (AP) — A night of violence gave way to a day of mourning Sunday for a man who died after sustaining serious injuries while in the custody of Baltimore police.

Pastor Jamal Bryant told the congregation at Empowerment Temple AME Church that "somebody is going to have to pay" for the death of Freddie Gray, a 25-year-old black man who died a week after an encounter with police left him with serious injuries.

Bryant told churchgoers, almost all of them black, that if "you're black in America your life is always under threat." Bryant also addressed the violence that erupted Saturday night during what began as a peaceful demonstration attended by more than a thousand people.

Some 34 people were arrested, according to Baltimore Police Department, and six police officers sustained minor injuries. After services were over, Bryant, whose church will pay for Gray's funeral, met with the family. He said after the meeting that they are "holding on" and that they don't want violence.

Bryant said marches and demonstrations would continue but that "violence never leads to justice."

A wake at Vaughn Green East funeral home followed the church service. Mourners passed by Gray's white coffin, which was draped in white silk. He was dressed in a white shirt, black pants, white sneakers and Los Angeles Dodgers white baseball cap.

Above the lid to the coffin was a floral arrangement and inside the lid was a pillow with a screen-printed picture of Gray flanked by doves and the quote, "Peace, Y'all" at the bottom edge.

About 20 people sat inside the chapel as a steady stream of people filed inside, waiting their turn to view the body.

Mourners also gathered outside. Some held up signs that read, "We remember Freddie" and "Our Hearts Are With The Gray Family."

Tina Covington, 46, said she did not know Gray but came to express her condolences to his family. She has a son near Freddie Gray's age.

"It hits home. It really does. It's a reality check," said Covington, whose son is 27. "There is something going on in the police department that needs to change."

Gray's funeral is planned for Monday.

Fire officials said roughly 1,200 protesters gathered at City Hall on Saturday afternoon to protest Gray's death, which has prompted near-daily demonstrations since he died April 19. Gray was arrested one week before that when officers chased him through a West Baltimore neighborhood and dragged him into a police van.

However, a smaller group splintered off and looted a convenience store and smashed storefront windows. A protester tossed a flaming metal garbage can toward a line of police officers in riot gear as they tried to push back the crowd. Earlier, a group of protesters smashed the windows of at least three police cars.

Rep. Elijah Cummings, a long-time congressman who represents Baltimore's 7th District, told CBS' "Face the Nation" on Sunday that there is deep frustration over the case.

"Mr. Gray died a week ago. And I think the thing that upset so many people was the fact that here's a young man. We still don't know exactly why he was arrested," Cummings said. "We do know that he was hollering out for aid. He was not given aid after being arrested. ... A lot of people are very, very frustrated as to trying to figure out what happened here, and it's very upsetting.

Police acknowledged Friday that Gray should have received medical attention at the spot where he was arrested — before he was put inside a police transport van handcuffed and without a seat belt, a violation of the Police Department's policy.

Gray was arrested after he made eye contact with officers and ran away, police said. Officers held him down, handcuffed him and loaded him into the van. While inside, he became irate and leg cuffs were put on him, police have said.

Gray asked for medical help several times, beginning before he was placed in the van. After a 30-minute ride that included three stops, paramedics were called.

Authorities have not explained how or when Gray's spine was injured.