A Mexican national fatally shot by an Immigration and Customs Enforcement officer in Houston had no criminal convictions during his decades living in the U.S. and was driving a crew to a homebuilding site when he was killed, his family and a Texas congresswoman said Wednesday.

Lorenzo Salgado Araujo was working toward securing legal status in the U.S. and knew what to do if stopped by ICE, his son said.

Ronaldo Salgado said his father may have been scared that the people in unmarked vehicles were coming to steal the tools he used for 35 years to build homes, from sunrise to sunset, so he could send his three American sons to college.