HPD officers responded to a suspicious person with a knife call but did not locate the suspect at that location. One officer canvassed the area and saw a witness who stated the suspect stabbed an elderly female before entering her vehicle. The elderly female was lying on the ground near her car. As the officer ordered the suspect out of the complainant’s vehicle, the suspect exited the vehicle and moved quickly towards the officer with a knife. In fear of serious bodily injury or death, the officer fired his duty weapon twice, striking the suspect. HFD transported the elderly female to the hospital where she succumbed to her injuries.