Steven Montrell Martin was a 37-year-old father of seven who was shot and killed on the evening of June 23, 2014, in Minneapolis after stepping in to defuse an argument at a friend’s home where people were playing cards. Accounts say the dispute between two groups escalated and Martin, trying to act as a peacemaker, was struck by a single fatal gunshot and was the only person hit.

The Minneapolis Police Department opened a homicide investigation but investigators and Martin’s family reported that witnesses to the altercation did not come forward. A memorial was placed at the scene. A year after the killing the case remained unsolved and no arrests had been announced.

Anyone who was at the gathering or who has information about that night is asked to come forward.