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MIAMI (CBSMiami) – The family of a man shot and killed during a police confrontation in Miami Gardens has received the green light to make a 19-minute long dash cam video public. The family’s attorney believes the “disturbing” video will shed new light on the investigation.

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The State Attorney gave the go-ahead Tuesday afternoon to release the video Wednesday at 1 PM.

The video shows the moments leading up to the police shooting death of a Lavall Hall, a Miami Gardens man with a history of mental problems.

Hall was shot on Sunday, February 15th, after his family called police for assistance because he thought someone was after him.

Click here to WATCH CBS4 Joan Murray’s report.

Hall’s mother, Catherine Daniels, had called police after he had a psychotic episode, she said he had been diagnosed as schizophrenic, and was wielding a broom handle. She said she had hoped police would take him to a mental health facility.

Instead, police said Hall became aggressive and when a Taser didn’t work, they were forced to fire.

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Hall’s mother and the mother of Hall’s children have seen the video. Along with the family’s attorney, Glen Goldberg.

Goldberg called the video is a bombshell and said the video is very revealing.

“It’s very disturbing and I’ve been a lawyer here in Dade County for 43 years. I have never seen anything on video like this,” said Goldberg. “This video is a blockbuster, a bombshell.”

State Attorney Katherine Fernandez Rundle told the family’s attorney in a letter, “we cannot prevent you from releasing the video,” it reads, but they believe the risk is, “this potential contamination may compromise our common goal to seek the truth and undermine the integrity of the investigation.”

But the family’s attorney said the video will shed new light on the investigation.

“The public needs to know what happened under this situation. We have to avoid future situations like this and make everyone accountable for their actions,” Goldberg said.

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Hall’s family is suing the Miami Gardens Police Department and the two officers involved in the shooting.