New Ferguson documents released

• The St. Louis County prosecutor's office releases hundreds more documents


• They include witness interviews and an autopsy from a Justice Department medical examiner


• They don't include FBI interview with Michael Brown's friend and witness Dorian Johnson


• Prosecutor had vowed to share all witness testimony; now says some records must be secret

(CNN) -- Weeks after a grand jury chose not to indict the officer who shot Michael Brown, officials have released a new mound of documents from the weeks of proceedings.

They include more witness interviews, an autopsy conducted by a Justice Department medical examiner, as well as radio communications from the day of the shooting, which CNN has reported on previously.

The documents do not seem to shed any new light on the events that led to Officer Darren Wilson shooting Brown.

On November 24, the day the grand jury's decision was announced, the St. Louis County prosecutor's office released thousands of documents from the proceedings. Among the details that emerged: Wilson fired his gun 12 times; the officer said he feared Brown could beat him to death; and Wilson said he was not carrying a stun gun because "it is not the most comfortable thing. They are very large."

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Washington University students march through a student lounge on the St. Louis campus as part of a nationwide walkout on Monday, December 1. Activists called for students to walk out of school and employees to walk off the job nationwide to protest police violence. A grand jury's decision not to indict Darren Wilson, a white police officer, in the August shooting death of unarmed black teenager Michael Brown has prompted demonstrations in Ferguson, Missouri, and across the country. See photos of the unrest in Ferguson.

Students at Jackson State University in Jackson, Mississippi, participate in the walkout on December 1.

Protesters join in the walkout at Union Square in New York on December 1.

Students at Clayton High School in Clayton, Missouri, take part in a "die-in" protest in the school cafeteria on December 1.

Boston Arts Academy students and supporters march in downtown Boston on December 1.

Members of the St. Louis Rams raise their arms as they walk onto the field in St. Louis before their NFL game against the Oakland Raiders on Sunday, November 30.

Officers wearing riot gear walk through a park in downtown St. Louis on November 30.

Several hundred people march down M Street in Washington during a Ferguson protest on Saturday, November 29.

Demonstrators in Brentwood, Missouri, protest inside the Galleria shopping mall on Friday, November 28. The protests forced some retailers to temporarily shutter their entrances on the busiest shopping day of the year.

A protester is arrested in New York during the Macy's Thanksgiving Day Parade on Thursday, November 27.

A protester sits in the back of a police bus after being arrested during a demonstration in Los Angeles on Wednesday, November 26.

Protesters gather on the steps of the National Portrait Gallery in Washington on Tuesday, November 25.

A protester adds wood to a fire burning in Oakland, California, on November 25.

A woman joins a rally near Los Angeles police headquarters on November 25.

Protesters gather in Eugene, Oregon, on November 25.

Protesters in Atlanta block all northbound lanes of Interstate 75/85 near the Georgia state Capitol on November 25.

Businesses were looted in Oakland on November 25, including a T-Mobile store.

People march in Newark, New Jersey, on November 25.

Hundreds of demonstrators gather to protest in Washington on November 25.

Protesters gather outside Los Angeles police headquarters on November 25.

Schoolchildren from the Potomac Preparatory Charter School take part in a "die-in" November 25 during a protest outside the Office of Police Complaints in Washington.

Students at the University of Minnesota in Minneapolis rally in support of police brutality victims on November 25.

Demonstrators gather November 25 outside the Minneapolis Police Department's Third Precinct.

Protesters march up New York's Seventh Avenue on Monday, November 24.

A protester in New York scuffles with police during a march toward Times Square on November 24.

Demonstrators gather around a fire in the streets of Oakland on November 24.

Protesters block Interstate 580 in Oakland on November 24.

Seattle police attempt to push back protesters with pepper spray and flash-bang grenades on November 24.

A Seattle protester pours milk in his eyes after being tear-gassed on November 24.

A protester in Denver holds up his arms during a moment of silence November 24 at Civic Center Park.

A crowd in Washington gathers outside the White House on November 24.

Demonstrators march down a street in Washington on November 24.

Community activist Najee Ali speaks in Los Angeles' Leimert Park on November 24.

Protesters in Los Angeles lie down in a major intersection to block traffic on November 24.

Protesters march near Chicago police headquarters on November 24.

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Photos: Ferguson protests across U.S.

The latest document release does not include one notable element: the FBI interview with witness Dorian Johnson, Brown's friend who was with him at the time of his shooting.

Despite the promises of St. Louis County Prosecutor Bob McCulloch, who had promised to make all witness testimony in the case public, McCulloch's office told CNN affiliate KSDK that it has kept some records secret at the request of federal authorities, who are still investigating the incident.

Executive assistant Ed Magee said the office had "turned over and relinquished control" of the FBI's interview, according to USA Today. He said the FBI asked the county not to release records that are part of an ongoing federal civil rights probe.

What Darren Wilson told the Ferguson grand jury

The Justice Department autopsy found that Brown's multiple gunshot wounds included one in the right hand at close range. Those findings are similar to previous autopsy results.

CNN's Rachel Clarke and Mariano Castillo contributed to this report.