By JAMIE STENGLE, Associated PressDALLAS (AP) — A Mexican man who was among three people shot at a Dallas immigration field office last week has died, becoming the second person killed in the attack, his family said Tuesday. No ICE personnel were hurt in the shooting, and Jahn fatally shot himself following the assault. The attack happened as heightened immigration enforcement has generated backlash against ICE agents and stirred fear in immigrant communities across the country. Mexico’s President Claudia Sheinbaum said Tuesday that her administration helped García-Hernández’s mother with the necessary paperwork to allow her to travel to Dallas. Following ICE procedures, the detainees were restrained inside the van, an ICE official said, adding that federal agents ran into gunfire to remove them and render aid.