Heartbreaking: Father bursts into tears telling CNN how Chicago police killed son who needed help

Antonio LeGrier, the father of a 19-year-old man killed by police over the weekend, broke down in tears during an interview with CNN on Tuesday.

On Saturday, Chicago police shot and killed LeGrier's son, Quintonio, after the father called 911 to get help dealing with a mental issue the teen was having.

Throughout Tuesday's interview with CNN host Brooke Baldwin, LeGrier struggled to keep his composure. But time and time again, his emotions took over.

Tears welled up in LeGrier's eyes before Baldwin asked her first question. And at times, he sobbed uncontrollably, putting his head in his hands.

"This just doesn't feel right," the CNN host eventually noted before cutting to a commercial break.

When the broadcast resumed, LeGrier had regained his composure, but within minutes, he was sobbing again.

"I'm doing this interview and the lawsuit so no one can just walk away and sweep it under the rug," he explained. "Because my son's life will not be in vain. I need the nation to know that I, Antonio LeGrier, father of Quintonio LeGrier, raised a good son."

"I want to be the first one to say, I am now his voice! I'm his voice," LeGrier said, touching his hand to chest. "I'm all he's got to tell his story."

"I think Antonio has had enough," LeGrier's attorney told Baldwin.

"I think he has," she agreed.

Watch the video below from CNN, broadcast Dec. 29, 2015.