Oscar Santos-Chaves, 36, was found with stab wounds and later pronounced dead near 282 Border Street in East Boston at about 6:59 a.m. on April 12, 2014. The Office of the Chief Medical Examiner ruled his death a homicide.

Police responded to a report of a man down and investigators spent days and weeks trying to reconstruct the events, but publicly released information includes no motive and no named suspects. The case remains listed among the unsolved 2014 homicides by the Boston Police Department and there have been no arrests.

Anyone who remembers that morning, saw activity near Border Street, or has information that could help the investigation is asked to come forward.