Marvin Smith, a 49-year-old African-American man, was fatally ambushed and shot near his Milwaukee home on May 18, 2014. Authorities described the killing as a retaliatory execution tied to Smith’s recent cooperation with police.

On April 30, 2014, a concerned citizen reported that two men—Marvin Smith and Antonio Wright—had firearms and had discharged a weapon in a residential area. Both were arrested on May 1, 2014; Smith was reportedly the person who provided information to police and was released shortly afterward. In the days that followed, word that Smith had served as an informant is believed to have spread, and investigators say he was targeted because of that cooperation.

Does anyone have information about witnesses, arrests, or court actions related to this murder?