Authorities said the man was knocked down and hit his head on a curb, which caused a brain hemorrhage.
CAMDEN -- Back in May, Jose Rivera-Hernandez was knocked out by a man wearing brass knuckles and struck his head on a curb, according to authorities.
Now, the man investigators say punched him is facing a second-degree manslaughter charge because Rivera-Hernandez died from his injuries Saturday.
The Camden County prosecutor's office said Derrick Cauthorne, 37, followed and attacked Rivera-Hernandez, 53, in a vicious assault May 21 that was witnessed by at least two people and caught on surveillance video.
Cauthorne was on parole at the time, the prosecutor's office said. He was arrested May 31 and initially charged with inflicting bodily injury during a theft, but the state charged him with manslaughter Wednesday due to Rivera-Hernandez's death.
State records show Cauthorne served just over 10 years on charges related to a robbery and a confrontation with police. He is now being held in South Woods State Prison.
According to the probable cause statement and other court documents filed by the prosecution, detectives believe Cauthorne and Rivera-Hernandez had a verbal argument on Federal Street shortly before midnight on May 21.
Rivera-Hernandez and a friend then walked across the street, where Cauthorne followed them to their vehicle in the H&R Block parking lot at 2716 Federal St., detectives allege.
They exchanged words and Cauthorne demanded money while holding the brass knuckles, a witness told detectives.
The video footage showed Cauthorne strike Rivera-Hernandez, then his friend, before hitting Rivera-Hernandez a second time in the face with the brass knuckles, the probable cause statement said.
The blow caused Rivera-Hernandez to fall backwards, strike his head on the curb and lose consciousness, authorities said. Cauthorne then picked up the unconscious man's cellphone and left the area, according to the prosecutor's office.
Emergency responders found the bloodied Rivera-Hernandez going in and out of consciousness, the prosecutor's office said, and took him to Cooper University Hospital. Doctors discovered he had a brain hemorrhage and placed him in a medically-induced coma.
After being transferred to various facilities, he died Aug. 5 at Virtua Hospital in Marlton, the office said.
Medical Examiner Gerald Feigin ruled the death a homicide caused by blunt force trauma to the head.
Court documents state that one of the two witnesses picked Cauthorne out of a photo array shortly after the incident in May.
Cauthorne was paroled in 2015 from his 13 year sentence. According to a 2013 appellate decision, Cauthorne pleaded guilty to escape using a weapon, aggravated assault on a law enforcement officer, robbery and drug possession with intent to sell.
The decision states that Cauthorne in 2004 robbed a "prominent attorney" by grabbing him by the throat and demanding money. When police arrested him, he kicked a door open so that it struck an officer and then ran away in handcuffs. He has 21 bags of crack cocaine on him at the time, the decision stated.
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