Harris County District Attorney Sean Teare said Thursday his office is committed to investigating the fatal shooting of Lorenzo Salgado Araujo by a federal immigration agent but cautioned that local prosecutors face challenges accessing evidence.

His comment came amid mounting calls for independent investigations of the Tuesday shooting in Houston, particularly from 52-year-old Salgado Araujo's family and community advocates who said they didn't trust the federal government to fairly scrutinize the conduct of Immigration and Customs Enforcement officers in the case.

The Department of Homeland Security's Office of Inspector General is leading the investigation, and Teare said it remains to be seen whether the agency would share anything with his office.