(Gresham, OR)  --  Investigators say a man who shot and killed his two young daughters killed himself after he was shot by a Gresham police officer Wednesday morning.  Authorities say eight-year-old Janet Cortinas-Duran and her eleven-year-old sister Jasmine Duran-Cortinas died in the family SUV after being shot multiple times by their father.  Forty-two-year-old Jaime Cortinas of Portland died of a self-inflicted gunshot wound after he encountered police, who responded to a report from his wife that he was suicidal and threatened the girls.  Police say multiple officers suffered burns and smoke inhalation while attempting to get the girls out of the SUV, which authorities say had been set on fire by Jaime Cortinas.