The Customs and Border Protection (CBP) officers involved in the deadly shooting of Alex Pretti in Minneapolis on Saturday were wearing body cameras, a U.S. Department of Homeland Security official told ABC News.

The crackdown in Minnesota and the deadly shootings of two U.S. citizens are raising questions about the tactics used by federal immigration agents. Amna Nawaz discussed that with former U.S. Customs and Border Protection Commissioner Gil Kerlikowske.

Current and former officials describe growing frustration and disillusionment with the Trump administration’s approach, even as they support the goal of immigration enforcement.

Host Dana Bash pressed U.S. Border Patrol Commander-at-Large Gregory Bovino for answers, specifically asking why videos seem to show Pretti holding a cell phone rather than a weapon before he was shot.

Makeshift vigils were popping up in Minneapolis for 37-year-old Alex Pretti on Sunday. He was fatally shot by a federal agent in the city on Saturday. The Trump administration argued that Pretti assaulted officers,