In the documents, officials say Barber's body was found in his residence where the thermostat was set at 91 degrees and the heat was set to "on."

Investigators noted there was exercise equipment present at the scene, and said that Barber did, in fact, have a "history of exercising during sauna-like conditions."

According to the report, there was no evidence of trauma or drug overuse found inside of Barber's body, and "no clear evidence of natural disease found" either.

In a separate Frisco Police Dept. incident report, also obtained by TMZ Sports, officers say Barber had not been seen for around 3 weeks prior to the discovery of his body on June 1.

In the docs, officers say multiple people told them they tried to make contact with Barber throughout May as there appeared to be a leak coming from his apartment -- though all attempts were unsuccessful.

On June 1, according to the docs, officials forced their way into Barber's apartment, and found him dead inside the shower of his residence's master bedroom. They noted water had been running in the tub in the guest bathroom.