Joel Tengue was 21 when he was found shot to death behind an apartment building in Duluth, Georgia, on April 19, 2014. A resident of the Astor Place Apartments on Boggs Road discovered his body around noon. He had a fatal gunshot wound and his beige Ford Focus was recovered at the scene and processed by police.

Investigators say Tengue had arranged to meet someone he met online to sell what he initially described as a pair of Nike sneakers, though authorities believe the transaction was actually for marijuana. A suspect, 24-year-old Nicambreon Flowers, was identified quickly and arrested in Mississippi five days after the killing. He was charged with felony murder and armed robbery in connection with Tengue’s death.

Flowers was convicted in February 2016 and received two concurrent life sentences for murder and armed robbery. Does anyone have information about Tengue’s movements that day or about the online contact he planned to meet?