On the morning of April 23, 2015, 39-year-old Mathew Douglas Straub called his mother at 9:38 a.m. to say there were two men he did not recognize outside his Fenton Street home in Lansing, Michigan. Twenty-two minutes later his mother arrived and found the front door kicked in; after her calls went unanswered she called 911. Police discovered Mathew’s body on the kitchen floor shortly after 11 a.m.; he had been fatally shot and investigators determined his death was a homicide.

Detectives say the attack was not random and pursued a theory that the killers targeted Mathew because he was legally growing marijuana at his home. Investigators interviewed numerous witnesses and followed tips but were unable to identify the assailants. The case later went cold; no arrests have been announced and no suspects have been publicly identified.

Mathew’s family describe him as the backbone who held them together; his wife, sons, mother and siblings continue to grieve. The Lansing Police Department Cold Case Unit is seeking information, and a reward is offered for tips that lead to an arrest and conviction. If anyone knew Mathew or has information about who those two men were, please come forward.