Crime Death of woman, 18, found dead in Mattapan home owned by Pressley’s husband ruled a homicide The Office of the Chief Medical Examiner determined the woman died from a single gunshot wound to the head. Yoseliani Marte died from a gunshot wound in a Mattapan home at 18 years old. via GoFundMeThe death of an 18-year-old woman whose body was found in a Mattapan rental property owned by the husband of Congresswoman Ayanna Pressley was ruled a homicide Thursday, authorities said. Yoseliani Ann Marte Ocasio, of Boston, was shot inside 25 Malta St. shortly before 2 p.m. on July 18. Harris and Pressley are not connected to the incident or its investigation, a spokesperson for Pressley’s office and police confirmed in a statement to Boston.com.