Joel Carrizalez, 43, was found fatally shot in his pickup truck parked at Olle Middle School in Houston on May 13, 2011. Two Alief Independent School District employees discovered him slumped over in the driver’s seat. His wallet and truck keys were missing, a detail investigators noted as suggesting a possible robbery motive.

Carrizalez had been at a local cantina that night and left about 4:45 a.m. after dropping off a friend; surveillance video shows him leaving the cantina and, roughly 30 minutes later, his truck driving past Olle Middle School. Those recordings were described as the primary leads available to investigators. His wife and four children, including his son Flavio Carrizalez, made public appeals for information; Flavio described his father as serious but friendly, with no known conflicts and a commitment to his family.

No arrests or suspects had been reported in connection with the murder. If anyone remembers seeing Joel, his truck, or anything near Olle Middle School that morning, please share what you know.