More details regarding the death of Nick Gordon have been revealed.

According to CNN, an autopsy report revealed that the cause of Gordon’s death was a heroin overdose. Additionally, the toxicology report found morphine, caffeine, and naloxone (used to reverse opioid overdoses) in Gordon's system. Local Florida news station WKMG-TV reports that clonazepam, ethanol and oxycodone were also present.

As Yahoo! reports, police found the 30-year-old unresponsive in a hotel room on Jan. 1. His death came only 3 years after he was found liable for the death of Bobbi Kristina Brown, the daughter of singers Bobby Brown and Whitney Houston.

The 22-year-old’s estate believed Gordon had given her “a toxic cocktail rendering her unconscious and then put her face down in a tub of cold water causing her to suffer brain damage,” according to the Los Angeles Times, on Jan. 30, 2015. She remained in a coma for six months before death.

CNN reports that the autopsy report states that drug intoxication and immersion in water resulted in pneumonia and brain damage that ultimately led to the actress’ death. A judge ordered Gordon to pay $36 million after he failed to attend two court hearings.

Gordon's civil defense attorney Randy Kessler was devastated by the news of Gordon’s death.

"This is a tragic end to Nick's troubled life," he said.

According to Gordon's defense attorney, Joe Habachy, his client had been trying to turn his life around. "He worked hard to hold his head up and stay sober and ... he genuinely wanted a happy healthy life with his family more than anything else," Habachy explained. "My heart goes out to the family and friends Nick leaves behind and to any other families dealing with the losses and heartache caused by drugs."

Gordon was taken in by Houston at the age of 12 and grew up alongside Brown. Gordon and Brown’s romantic relationship became public following the 2012 death of Houston, who accidentally drowned in a bathtub.

Bobbi Kristina Brown, Nick Gordon
Bobbi Kristina Brown's boyfriend, Nick Gordon, was arrested last weekend on domestic violence charges. Pictured: Brown, Gordon arrive at Tri-Star Pictures' 'Sparkle' premiere at Grauman's Chinese Theatre on Aug. 16, 2012 in Hollywood, California. Getty Images/Frazer Harrison