Transcript for Young pediatrician held hostage and shot by terminally ill doctor
We turn now to an armed hostage standoff at a pediatrician's office in Texas that ended in tragedy. The gunman with terminal cancer killed a doctor, mother of three before turning the gun on himself. Marcus Moore has the story. Reporter: This morning, a city grieving as investigators try to figure out what led to a hostage standoff and murder/suicide. Tuesday afternoon Austin, Texas, police officers responded to reports that a man now identified as Dr. Bharat narumanchi was holding five workers hostage at a pediatric doctor's office. There were no patients or children that were at the building when the suspect arrived on scene. Reporter: Police say narumanchi had multiple guns when he walked into the building. He displayed a gun and told the hostages to tie themselves some of the hostages were able to escape and some of them were ultimately released. The doctor is still inside. Reporter: The last hostage, 43-year-old Dr. Katherine Dodson could not escape. For hours negotiators tried to speak with narumanchi but when S.W.A.T. Entered that building both doctors were found dead. Our hearts are just in a place that we can't even describe how sad we are. Reporter: Overnight members of the community reflecting on Dr. Dodson's impact. Ready to sacrifice your life and your time and your children. She's a true hero. Reporter: The Dodson family sharing a statement saying as a dedicated mom, wife, daughter, friend and pediatrician she radiated light, love and joy in everything she did and everyone she touched. Authorities say the 43-year-old suspect also a pediatrician had applied to volunteer at Dodson's office a week before but was turned down. Investigators also say he was recently diagnosed with terminal cancer and given weeks to live. And investigators believe that cancer diagnosis may have played a role in what happened here but simply don't know for sure at this point. George, as this community continues to mourn. Such a horrible story. Okay, Marcus, thanks very much.
This transcript has been automatically generated and may not be 100% accurate.