U.S. Attorney General Eric Holder arrived in Ferguson Wednesday to meet with federal investigators and reassure residents of the suburban St. Louis community torn by several nights of racial unrest since the fatal shooting of a black 18-year-old by a white police officer.

While walking through Drake’s Place Restaurant in Ferguson, Holder told diners concerned about the recent clashes in the street, “we can make it better.”

He also met briefly with Missouri State Highway Patrol Capt. Ron Johnson, who has been in charge of security after the Aug. 9 shooting of Michael Brown sent protesters into the street with nightly, occasionally violent clashes with law enforcement officers. The National Guard has been called in to help keep the peace.

“We’re rallying against the criminals,” Johnson said. Asked whether he had confidence in the local investigation of the police officer, Johnson said: “General Holder, by being here, is a guarantee on that.”

The visit came the same day a grand jury in nearby Clayton was expected to begin hearing evidence to determine whether the officer should be charged in Brown’s death.

Holder made his first stop Wednesday at the Florissant campus of St. Louis Community College, near the suburb of Ferguson where Brown was shot Aug. 9. Kiyanda Welch said Holder talked to her and other students about the unrest and their own interaction with police. The attorney general told the group, “change is coming,” Welch said.

Holder was headed Wednesday afternoon to visit with FBI agents and other officials.

Outside the St. Louis County Justice Center in Clayton, where the grand jury was expected to convene, two dozen protesters gathered in a circle for a prayer, chanted, and held signs urging prosecutor Bob McCulloch to step aside. Nearly two dozen officers guarded the building’s main entrance, which also was blocked off with yellow police tape.

McCulloch’s deep family connections to police have been cited by some black leaders who question his ability to be impartial in the case of Darren Wilson — the white officer who fatally shot the unarmed Brown on Aug. 9. McCulloch’s father, mother, brother, uncle and cousin all worked for the St. Louis Police Department, and his father was killed while responding to a call involving a black suspect.

The prosecutor, who is white, has insisted his background will have no bearing on the handling of the Brown case, which has touched off days of rancorous nighttime protests during which authorities used tear gas and rubber bullets to clear the streets of the St. Louis suburb where he was killed.

The protests were more subdued Tuesday night, with smaller crowds, fewer confrontations and no tear gas. Police said they still made 47 arrests, but mainly of people who defied orders to disperse. Tensions rose briefly when someone hurled a bottle at officers, but there were no reports gunfire or the clashes that had marked previous nights.

In a letter published late Tuesday on the St. Louis Post-Dispatch website, Holder promised a thorough investigation while calling for an end to the violence in Ferguson. He said the bond of trust between law enforcement and the public is “all-important” but also “fragile.”

Arrest patterns “must not lead to disparate treatment under the law, even if such treatment is unintended. And police forces should reflect the diversity of the communities they serve,” Holder wrote.

He said the Justice Department would “defend the right of protesters to peacefully demonstrate and for the media to cover a story that must be told.”

The department has mounted an unusually swift and aggressive response to Brown’s death, from conducting an independent autopsy to sending dozens of FBI agents to Ferguson in search of witnesses to the shooting.

As for the county grand jury, prosecutor’s spokesman Ed Magee said Wednesday that there is no timeline for how long the process could take, but it could be weeks.

A day earlier, Missouri Gov. Jay Nixon said he would not seek McCulloch’s removal from the case, citing the “well-established process” by which prosecutors can recuse themselves from pending investigations to make way for a special prosecutor.

Departing from that process, Nixon said in a statement, “could unnecessarily inject legal uncertainty into this matter and potentially jeopardize the prosecution.”

McCulloch, a Democrat, was elected in 1991 and has earned a reputation for being tough on crime.

Ferguson city leaders said the mayor, the City Council and municipal employees have been exploring ways to increase the number of African-American applicants to the law enforcement academy, develop incentive programs to encourage city residency for police officers and raise money for cameras that would be attached to patrol car dashboards and officers’ vests.

“We plan to learn from this tragedy, as we further provide for the safety of our residents and businesses and progress our community through reconciliation and healing,” officials said in a public statement.

Meanwhile, Brown’s funeral arrangements were set. The Austin A. Layne Mortuary, which is handling arrangements, said the funeral will be at 10 a.m. Monday at Friendly Temple Missionary Baptist Church. Brown’s uncle, the Rev. Charles Ewing, will deliver the eulogy, and the Rev. Al Sharpton will also speak.

Brown will be buried at St. Peter’s Cemetery in St. Louis County.

(AP)