GENEVA — United Nations officials issued a scathing assessment of Russia’s compliance with an international treaty against torture and cruel and degrading punishment, highlighting, among a number of “troubling trends,” the increasing intimidation of people and organizations trying to monitor human rights.

The officials, members of the United Nations Committee Against Torture, said here on Friday that they were seriously concerned about “numerous and consistent reports” of threats, reprisals and deaths of human rights defenders and journalists in Russia. They also said that legal amendments recently enacted by President Vladimir V. Putin “undermined” the United Nations treaty.

The committee’s comments concluded a two-day review conducted here at which the Russian deputy minister of justice, Georgiy Matyushkin, leading a delegation of officials from nine ministries and government departments, said the Russian authorities had “moved further toward the humanization of criminal punishment” and overhauled law enforcement.

Mr. Matyushkin cited the creation of a committee to investigate crimes that is independent of the state prosecutor’s office, as well as of other law enforcement agencies, and includes a subgroup to investigate the illegal use of force by officers.