An Ethiopian immigrant fatally shot three of his relatives and wounded two others before killing himself early Monday at a home in southwest Atlanta, police said. Atlanta police spokesman Eric Schwartz said he believed the victims were all related. The gunman, described by a neighbor as a retired immigrant worker who delighted in helping children, was identified as Abdulaziz Ibrahim, 52. Neighbors told WSB Radio that the family was from Ethiopia. The shooting happened around 7 a.m. in a house in a residential area of neatly tended cottage homes and flowering trees near Hartsfield-Jackson Atlanta International Airport.