ICE agents detain 171 immigrants accused of murder and sexual assault of children, among other charges. "These are very dangerous people that we wanted off the streets," acting ICE Director Patrick J.
Lechleitner told reporters Thursday. In the group of those arrested there are more than 100 sex offenders, according to ABC News. The agency is working to use more advanced technology to process immigrants detained at the border, ABC News expanded. The operation was carried out between January 16 and 28 in 25 cities around the country.