MINNEAPOLIS — For the second time this year, authorities say there is not enough evidence to charge two white Minneapolis police officers in the November shooting death of a black man after a confrontation.

Wednesday’s announcement in a just-completed federal investigation angered activists who protested 24-year-old Jamar Clark’s death for weeks and remain outraged that both probes, the other released in March by a state prosecutor, came to the same conclusion.

“We are tired of what is happening, and what feels like the Jim Crow North,” Minneapolis NAACP President Nekima Levy-Pounds told reporters after U.S. Attorney Andrew Luger said there was insufficient evidence to support criminal civil rights charges against the two officers.

The officers, Mark Ringgenberg and Dustin Schwarze, were trying to arrest Clark when he was shot once in the head Nov. 15. He died a day later.

A key issue in both investigations was whether Clark was handcuffed when he was shot. The federal and state probes came to the same conclusion: Clark was not.

“Given the lack of bruising, the lack of Mr. Clark’s DNA on the handcuffs and the deeply conflicting testimony about whether he was handcuffed, we determined that we could not pursue this case based on a prosecution theory that Mr. Clark was handcuffed at the time he was shot,” Luger said at a news conference.

Hennepin County Attorney Mike Freeman declined on March 30 to file criminal charges against the officers, also citing forensic evidence and conflicting witness accounts. Federal authorities went a step further, seeking an independent review of the Hennepin County autopsy by the Office of the Armed Forces Medical Examiner at the Department of Defense.

Luger said “highly contradictory” testimony from witnesses would make it too difficult to prove beyond a reasonable doubt that Ringgenberg and Schwarze acted outside the law.

Clark’s death set off weeks of protests, including an 18-day tent encampment outside the police department’s 4th Precinct on the city’s north side, located blocks from the shooting.

According to a Minnesota Bureau of Criminal Apprehension investigation, Clark refused to remove his hands from his pockets. The officers tried to handcuff him but failed. Ringgenberg wrestled Clark to the ground but wound up on his back atop Clark and felt Clark’s hand on his weapon, according to the investigation.

Schwarze then shot Clark in the encounter that lasted barely more than a minute from the time the officers arrived.