"Human rights groups and the United Nations noted significant deficiencies in investigations into human rights abuses committed by [Ukraine’s] government security forces, in particular into allegations of torture, enforced disappearances, arbitrary detention, and other abuses reportedly perpetrated by SBU," the report said.
The perpetrators of the 2014 Euromaidan shootings in the country’s capital Kiev have not been held accountable, the report added.
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The US State Department also noted that Ukraine's government committed a series of human rights violations, including corruption, censorship and violence against ethnic minorities.
“Abuses included widespread government corruption, censorship, blocking of websites, government failure to hold accountable perpetrators of violence against journalists and anti-corruption activists, violence against ethnic minorities and LGBTI persons,” the report reads.
The State Department said the "most significant" abuses occurred in the Donbass region, where it said unlawful killings and politically motivating disappearances have occurred.
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The report also cited “multiple reports of attacks on journalists investigating government corruption” and accused Ukrainian authorities of restricting media content "on vague grounds."
The State Department report documents the status of human rights and worker rights in nearly 200 countries and territories. Its latest issue addresses violations that happened in 2017.