The case went cold, and no suspect was arrested. About four months after the robbery-murder, Cantu shot Joe De La Luz, an off-duty, plainclothes police officer, at the Scabaroo Lounge, a bar near Cantu's home. According to Cantu, the officer threatened him, revealing his concealed weapon, provoking Cantu (who was also armed) to fire at De La Luz whom he did not know was a police officer. According to De La Luz, he was shot four times by Cantu despite no provocation.