Virgin Islands police have declined to comment on his identity or what responding officers observed regarding the condition of Cail, who they say was transported by her boyfriend to a clinic and "dead on arrival."
Court records show Thomas spent years fighting the 2007 case in court and succeeded in having first-degree murder charges dismissed – however he was convicted on lesser charges, along with three other men, in an attack outside a Cruz Bay bar that left 21-year-old James "Jamie" Cockayne dead.
AMERICAN SWIMMING CHAMP FOUND DEAD IN US VIRGIN ISLANDS, INVESTIGATION UNDERWAY
Jamie Cockayne was killed on the island of St. John in the U.S. Virgin Islands just weeks after his 21st birthday in 2007. One man involved in the gang-style attack is the boyfriend of a former U.S. swimming champ found dead last week, according to local sources. (Jeanie Cockayne)
"It's very difficult to get justice in the Virgin Islands," Cockayne's mother, Jeanie Cockayne, told Fox News Digital Tuesday. "Very difficult."
She said her family hired private investigators and solicited tips from the public on their own, compiled all of the information and handed it over to police – while making it public at the same time.
"We spent tens of thousands of dollars," she said. "If they want anything done, if they're able to do anything, if they want justice for their daughter, they're gonna need to fight for it."
Kamal "Six Pack" Thomas shown in a 2007 booking photo -- after his arrest in connection with the beating death of 21-year-old Jamie Cockayne. First-degree murder charges were dismissed, and Thomas was ultimately convicted of assault and weapons charges, court records show. (Virgin Islands Police Department)
Even so, her son's killers had multiple successful appeals and had guilty verdicts tossed twice before finally being sent to prison.
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On the night of her son's slaying, another man cracked a pool cue in half during a dispute inside a bar, according to court documents. Cockayne left, but three men followed him outside and were seen chasing him down, surrounding him, and continuing the assault down the street.
Police found Cockayne dead an hour later, less than two blocks from the precinct building, covered in bruises and with multiple stab wounds. A fourth accomplice was convicted of witness tampering.
Jamie Cail was the winner of the 800 freestyle with the time 8:50.46 at the finals of the Speedo Grand Challenge, Heritage Park Aquatic Complex, Irvine. (Glenn Koenig/Los Angeles Times via Getty Images)
Another suspect in Cockayne's death, Jahlil Ward, served about seven years of a 15-year sentence and was killed in a drive-by shooting in 2020, according to the Virgin Islands Free Press.
As for Cail, police said they were notified of a "dead on arrival" case at the Myrah Keating-Smith Clinic on St. John around 2:40 a.m. on Feb. 21.
Jamie Cail performs during the Phillips 66 National Championship at the Centennial Sportsplex in Nashville, Tennessee on August 1, 1997. (Getty Images)
They said a boyfriend, who they did not name in the statement, told officers he came home from a bar shortly after midnight and found Cail on the floor. He and an unnamed friend brought her to the clinic, where medical staff could not revive her, police said.
VIRGIN ISLANDS MISSING WOMAN HAD AMERICAN BOYFRIEND QUICK TO ANGER: EX-WIFE
Former swimming champ Jamie Cail was found unresponsive by her boyfriend on the island of St. John, according to Virgin Islands Police. (Facebook/Jamie Cail)
Cockayne said that she had also been contacted by a St. John resident following Cail's death.
"They told me about how Kamal Thomas’ girlfriend was found dead," she said. "Apparently they didn’t know her well. They knew of her, and she was a nice person, but she just made bad choices. And he was one of them."
Jamie Cail in action during the Phillips 66 National Championships at the Clovis Swim Complex in Clovis, California on August 13, 1998. (Getty Images)
Police did not immediately respond to questions from Fox News Digital or requests for additional information.
Virgin Islands police have opened a criminal investigation and are asking anyone with information on the case to contact detectives or call 911.
Autopsy results for Cail, a former gold medalist in the Pan Pacific Championships and a high school state champion in California, were still pending.