by MARYANN MARTINEZ, TEXAS BUREAU CHIEF IN AURORA, COLORADO

A government app meant to vet migrants arriving at the US-Mexico border to legally allow them into the US was used by two men now accused of being vicious Tren de Aragua gang members, DailyMail.com can reveal.

Two Venezuelan men currently being held by Immigration and Customs Enforcement (ICE) in Aurora, Colorado and who are believed to be members of the bloodthirsty South American gang entered the US via the CBP One Mobile App, their relative exclusively told DailyMail.com.

The uncle, a resident of the Edge of Lowry apartment in the Denver suburb, claims his two nephews have no involvement in a brutal kidnapping of other migrants on Tuesday.

After the two victims, a man and woman were beaten, stabbed and held against their will for hours, they were released and called 911.

Local police descended onto the apartment complex, which the city acknowledges has been run by the criminal organization for months since video of the armed thugs emerged in August.

In all 19 migrants were rounded up and turned over to ICE. Charges against eight migrants have been filed for the kidnapping.

ICE later said three of those people were released, but the remaining 16 are all Venezuelan migrants who were either TdA members or associates of the mob-- considered to such a public safety threat that the US government classified TdA a transnational criminal organization over the summer.

The gang is also responsible for a wave of crime across American cities that includes beating police officers, rapes, murders and child prostitution.

The Edge at Lowry apartments was the second property taken over by the South American gang