U.S. Citizenship and Immigration Services played a key role in the investigation that led to a guilty plea from Nada Radovan Tomanic, a Bosnian-born naturalized U.S. citizen who admitted to lying about her past to obtain citizenship. Court records show she served with the Zulfikar Special Unit during the 1990s conflict and participated in the abuse of Bosnian Serb civilian prisoners. When applying for naturalization in 2012, she repeatedly denied her involvement in detention facilities and serious criminal acts, both on her application and under oath during her USCIS interview. Tomanic pleaded guilty to procuring citizenship contrary to law and faces up to 10 years in prison when sentenced on Feb. 3, 2026. The case was prosecuted by the Justice Department with support from the FBI, DHS’s Human Rights Violators and War Crimes Center, USCIS’ fraud detection unit, and international partners in Bosnia and Serbia, as well as the U.N.’s residual tribunal mechanism. Authorities encourage the public to report suspected human rights violators living in the United States.