Name: Daniel Joost.
Died: February 8, 2016.
Age at death: 18.
Cause of death: Multiple murder-suicide.
Location: Chicago, Illinois, USA.
Daniel and his mother, 55-year-old Margaret O’Leary-Joost, were strangled to death by Daniel’s father, who then took his own life.
Perpetrator: David Joost (Father).