A violent shooting in Arvada, Colorado, on August 7, 2016, ended with two people dead and two wounded. Thirty-year-old Edgar Loera Munoz was killed when gunfire erupted in what has been described as both a drive-by shooting and a shootout. Twenty-three-year-old Dustin Karr also died; a man and a woman suffered injuries in the exchange.

Investigators identified and arrested two suspects in the immediate aftermath: 24-year-old Brandon Karr and 24-year-old Rojelio Heredia.

Did anyone in Arvada that day see how the confrontation began or know why these people were together?