BEIRUT, Lebanon — NATO has not sufficiently investigated the air raids it conducted on Libya that killed at least 60 civilians and wounded 55 more during the conflict there, according to a new United Nations report released Friday.

Nor has Libya’s interim government done enough to halt the disturbing violence perpetrated by revolutionary militias seeking to exact revenge on loyalists, real or perceived, to the government of Col. Muammar el-Qaddafi, the report concluded.

Published without publicity on the Web site of the United Nations Human Rights Council, based in Geneva, the report details the results of an investigation by a three-member commission of distinguished jurists. It paints a generally gloomy picture of the level of respect for human rights and international law in Libya, while acknowledging that the problem is a legacy of the long years of violent repression under Colonel Qaddafi.

NATO air raids that killed civilians in Libya have been criticized by rights groups, and the alliance’s refusal to acknowledge or investigate some of the deaths has been the subject of earlier news reports, including an extensive account in The New York Times last December. The new report represents the first time that NATO’s actions in Libya have been criticized under the auspices of the United Nations, where the bombing campaign in the name of protecting civilians from Colonel Qaddafi’s forces was authorized by the Security Council.