Houston Police Chief Art Acevedo said investigators believe Sgt. Sean Rios was on his way to work at Bush Intercontinental Airport when he responded to reports of shots fired between the drivers of a Mercedes and a white truck.

Houston Police Chief Art Acevedo said investigators believe Sgt. Sean Rios was on his way to work at Bush Intercontinental Airport when he responded to reports of shots fired between the drivers of a Mercedes and a white truck.