Celio Antonio Posada, 35, was fatally shot after an altercation outside the El Senior Tequila nightclub in Waterloo, Iowa. He had been at the bar with his fiancée on the night of August 22, 2014; a man identified as Rodolfo Gonzalez Pena joined them and a conversation turned into a dispute that moved into the nightclub parking lot. Gonzalez produced a handgun and fired two shots, one that struck Posada in the chest from a distance and a second shot at close range to the head, leaving Posada with fatal injuries.

A nearby Black Hawk County deputy stopped a vehicle a block from the club and identified the driver as Gonzalez; officers recovered a handgun and initially charged him with weapons and driving offenses. Prosecutors later charged Gonzalez with first-degree murder. At trial Gonzalez argued self-defense, claiming Posada had tried to stab him and had claimed gang ties; the jury rejected that claim and convicted Gonzalez of first-degree murder under the felony murder rule.

Did anyone who knew Celio or was at the nightclub that night see what happened in the parking lot?