Transcript for Texas man killed by police after mental distress call
Texas, fatally shot by police. Patrick Warren's family is speaking out for the first time about their call for help that turned deadly. Now they want the officer to be fired and charged. A ring doorbell camera captures the chaos and soon a family's heartache when the Killeen, Texas police officer first used his stun device, then shot 52-year-old Patrick Warren Sr. Who family members said was in a mental crisis. My father was outside, and he was praising to the sky, you know, he was saying different things like hallelujah, but he was super loud. You couldn't get him inside. We're like, okay, something is going on. We need to alert somebody. Reporter: Family members tell ABC news after they called the city's mental health hotline, a lone police officer now identified as Reynaldo Contreras arrived at the scene. We had no idea they were sending out a police officer. Reporter: In the video you can see Contreras walk into the house. Moments later he comes back out then Warren comes out of his house and waves his arms and appears unarmed. You can hear family members urging police not to shoot. Do not shoot him. Reporter: Family and friends come into view as Warren and the officer are moving away from the house. The shaky cell phone video captures what happens next. The sounds of the stun device followed by gunshots. Hey, sit down. Sit down. Sit down. Don't shoot him! Don't shoot shim. No, I told you, don't use a gun! Reporter: The officer shot Warren three times as his mother, wife and sons watched from the porch. This is one of the worst police officer involved shootings I've ever seen. Reporter: The family's attorney said the situation should not have ended this way. He showed up alone. He showed up untrained. He showed up hostile. All those things made for a deadly cocktail and this result could have completely been avoided. Reporter: The department says officer Contreras, a five-year veteran, has been placed on administrative leave pending the results of the investigation. I try to think of things to keep busy so I don't focus on that. It's hard to grieve when there's still an officer walking the streets that killed my father. Local and state law enforcement officials in Texas tell ABC news the investigation is ongoing. According to the family's attorney they are asking for that body camera footage to be released from the shooting. We are told the footage will not be released as evidence until it's been turned over to the bell county D.A. And the prosecutor's office.
This transcript has been automatically generated and may not be 100% accurate.