BUFFALO, N.Y. — The death of a nearly blind refugee from Myanmar who was found on a Buffalo street in February — five days after Border Patrol agents left him at a doughnut shop — has been ruled a homicide, authorities said Wednesday. Death of a refugee left at a Buffalo doughnut shop by Border Patrol is ruled a homicide The Erie County Medical Examiner’s Office didn’t reach any conclusions about responsibility for Nurul Amin Shah Alam’s death, which the agency said was caused by complications of a perforated duodenal ulcer, precipitated by hypothermia and dehydration. Ruling a death a homicide means it resulted from another person’s actions — or inaction — but doesn’t necessarily mean that a crime was committed. Erie County officials planned a news conference later Wednesday. A message seeking comment was sent to U.S. Customs and Border Protection. The agency has previously said that Shah Alam “showed no signs of distress, mobility issues, or disabilities requiring special assistance” when agents dropped him off Feb. 19 at a Tim Hortons restaurant north …