Then Huynh, a 32-year-old man of Vietnamese descent, was shot and killed on January 9, 2015, while unloading groceries outside his girlfriend’s townhome in the Heights neighborhood of Houston, Texas. Witnesses heard screaming and a gunshot, found Huynh wounded, and he was taken to the hospital where he was pronounced dead shortly after arrival.

Investigators arrested 21-year-old Curtis Friday Odigie and charged him with murder after surveillance footage reportedly captured him as the gunman; he was taken into custody without incident. Detectives say a second suspect remained at large: two people were seen fleeing the scene in a BMW sedan and the identity of the other individual is unknown. Investigators also found a tracking device had been planted on Huynh’s pickup truck.

Huynh, who managed two strip centers, reportedly had no known enemies. His family has expressed grief and concern that other relatives could be targets and are cooperating with police. Anyone with information about the second suspect or the case is asked to come forward.