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Warning: This video contains graphic content, and viewer discretion is advised. 

Cellphone video appearing to show a deputy’s husband placing a 24-year-old man in a chokehold during a fight outside a Denny’s restaurant in the Houston area was released on Monday, less than a week after the young father died at a hospital.

John Hernandez is seen before his death at a Texas hospital in a photo obtained by KTLA sister station KDAF in Dallas.

The footage was captured by a concerned citizen who recorded the incident, despite being told to stop filming because it was “illegal,” KTLA sister station KDAF in Dallas reported.

“This is what witnesses have been saying all along,” said Randall Kallinen, a civil rights lawyer who is representing victim John Hernandez’s family. “The Harris County deputies actively tried to cover up the killing at the scene and let a killer go free because he was married to a deputy.”

The footage was released by attorney Jack Carroll, who is representing the unidentified man who recorded the footage, according to the Houston Chronicle.

At a news conference on Monday, Carroll told reporters he was “pretty shocked” when he first saw the footage over the weekend.

“It’s a sad video, because you’re watching a man basically get killed. He was kicking his legs in a helpless fashion … begging for it to stop,” Carroll said, according to the Chronicle.

Hernandez died Wednesday after being taken off life support at Lyndon B. Johnson Hospital. His family made the tough decision to remove breathing tubes after it was determined by doctors that Hernandez was brain dead.

The family is now seeking justice and feels that his death could have been prevented.

Investigators said the deputy’s husband drove up to a Denny’s restaurant in the 17700 block of the Crosby Freeway on May 28 at around 11:40 p.m. His children were in the car with him as they waited to meet with his wife, a Harris County sheriff’s deputy who was off-duty at the time.

While waiting in the parking lot, deputies said the husband saw Hernandez urinating in public and went to verbally confront the man about his behavior. Officers said the argument escalated to a physical altercation. Moments later, the deputy, who was off-duty at the time, arrived in a separate vehicle.

Video shows the deputy’s husband on top of Hernandez’s back with a strong chokehold around his neck. Hernandez is seen on the video kicking his back legs, and making audible sounds of struggle.

The husband would not let go, the video showed.

Off camera, a man and a woman can be heard telling the individual who was recording to stop because it was “illegal” and he could “go to jail” if he continued to record.

One person put their hand in front of the camera in an apparent effort to block the recording, the footage showed.

The video is only a minute-long, but witnesses the fight lasted about 10 minutes, according to the Chronicle.

Investigators said the deputy called the Sheriff’s Office for backup and emergency medical services before helping her husband restrain Hernandez.

The man did not get off of Hernandez until he stopped moving. When the deputy realized Hernandez was not breathing, she began to perform CPR on him until paramedics arrived, witnesses said.

Neither the deputy nor her husband were injured during the altercation, authorities said. No charges have been filed at this time.

An attorney for the husband contended that Hernandez was the aggressor in the incident, and that the video doesn’t show everything that went happened.

“This is absolutely not the full footage,” Scott Courtney said, according to the Chronicle. “I think the comments made by the other attorneys are a little irresponsible. You need all of the facts before coming to the conclusions they’re making.”

The deputy will remain on active duty while Internal Affairs investigates her involvement in the incident, the Sheriff’s Office said.

The Hernandez family is left in disbelief, and says the attack happened in front of Hernandez’s young daughter.

“John’s 3-year-old daughter witnessed the killing and begged the killer to stop hitting her daddy,” the girl’s mother, Maria Toral, said.

Kallinen has demanded the Sheriff’s Office allow an independent, outside investigation of the death.

Harris County Sheriff Ed Gonzalez said he’s confident in the office’s ability to be transparent, thorough and unbiased. He also assured that the deputy’s husband was not receiving preferential treatment because of his wife’s position.

Gonzalez said the investigation is still in its early stages, and the Sheriff’s Office doesn’t want to rush to any quick judgments.

“[It] was an altercation that occurred between two parties, and obviously, it was fatal for Mr. Hernandez, unfortunately,” Gonzalez said. “But part of [the investigation] is to see what led to that. What was the actual cause? That’s why we could look at video footage, but a medical examiner needs to tell us this was cause of death, this is what led to the death. Not, yes, he died. But, he was on top? Was there another health issue? There’s different factors in this type of case.”

Attorneys for the Hernandez family and several witnesses say the video leaves no doubt as to what caused the young father’s death.

“An anonymous concerned citizen brought me the video because he said it shows murder,” said criminal defense lawyer Jack Carroll, “I concur.”

The Harris County Sheriff’s Office released the following statement:

“Harris County Sheriff’s Office investigators are aware of the cell phone video that was made public today. The investigation into the death of John Hernandez remains a high priority and will be referred to the Harris County District Attorney’s Office for consideration in a timely manner.”