Justice Department investigators have all but concluded they do not have a strong enough case to bring civil rights charges against Darren Wilson, the white police officer who shot and Michael Brown in Ferguson, Mo., law enforcement officials said.

When racial tension boiled over in Ferguson after the Aug. 9 shooting, Attorney General Eric H. Holder Jr. traveled to the St. Louis suburb to meet with city leaders and protest organizers in an effort to bring calm. He assured them that the federal government would open a civil rights investigation into the fatal shooting of Michael Brown. But that investigation now seems unlikely to result in any charges, the Washington Post reports.

“The evidence at this point does not support civil rights charges against Officer Wilson,” said one person briefed on the investigation, who spoke on the condition of anonymity because of the sensitivity of the case.