The victims killed in a mass shooting at an Oregon elementary school included a teacher who was working her "dream job" and three students in a special needs classroom, officials said.

Another student and teacher were also injured in Thursday's shooting at Silver Rail Elementary School in Bend, after a suspected 16-year-old gunman shot his way inside the school, police said.

All of the shooting victims were in a special needs classroom in the school, Bend Police Chief Mike Krantz said during a news conference on Friday.