U.S. Immigration and Custom Enforcement (ICE) officials staged raids across the country, ending the week-long operation with 50 fugitive "known or suspected human rights violators" in custody.

"Operation No Safe Haven II," a nationwide series of raids following the pattern of September 2014's "No Save Haven" operation, concluded Thursday after bringing 50 foreign nationals into custody via ICE field offices in Atlanta, Baltimore, Boston, Chicago, Detroit, L.A., Miami, New Jersey, New York City, and several other locations.

Of the 50 detained on human rights violations, according to ICE, 10 were convicted criminal aliens in the U.S.

The operation more than doubled the number of human rights violators arrested since the last "No Safe Haven" operation, a collaborative effort between ICE Human Rights Violators and War Crimes Center, the ICE National Criminal Analysis and Targeting Center, and the ICE National Fugitive Operations Program.

According to the agency, the ICE Human Rights Violators and War Crimes Unit has arrested more than 275 individuals on human rights violations since 2014.

Among the detainees was a person with ties to a paramilitary organization responsible for ethnic cleansing in the former Yugoslavia, an East African former intelligence officer who engaged in torture, and a fugitive convicted of multiple U.S. drug charges, who also formerly served an oppressive regime as a military police officer, according to ICE, which did not name specifics about detainees.

The nationwide raids took place coincidentally at the same time the National Immigration Justice Center (NIJC) obtained thousands of documents from U.S. Immigration and Customs Enforcement detailing information surrounding the agency's controversial detention centers used to detain undocumented immigrants, following four years of Freedom of Information Act requests.

As we previously reported, NIJC released the information this week, which included inspection reports from approximately 100 detention centers that provided an "unprecedented look" into what NIJC claimed is a failed system that lacks accountability.

Included in the report are details of 45 detention facilities operated with "indefinite" contracts with outdated standards fulfilled by private companies, along with deposition testimony from a former ICE contracting officer that ostensibly revealed insufficient quality control and transparency in the contracting process.