UNLV defensive lineman Ryan Keeler had been dealing with nausea and had felt sick for at least seven days prior to his tragic death on Feb. 20 ... this according to a new police report, obtained by TMZ Sports.
In the Las Vegas Metropolitan Police Department documents, cops say that after Keeler was found dead in his bed, they interviewed a friend of the football player's who told them Keeler had been fighting an illness since at least Feb. 13.
Cops say the friend, though, had told them he had just seen Keeler at dinner on Feb. 19 ... and Keeler was "feeling a little better."
UNLV Football Player Ryan Keeler Dead At 20
In the report, cops say a man with the title of "director sports medicine" told them Keeler had been prescribed medication on Feb. 17 ... and had just visited him on Feb. 19 as well.
It's not clear what the prescribed medication was -- the report was redacted.
The new documents also revealed that UNLV assistant coach Julio Garcia was the one who had initially discovered Keeler after doing a welfare check on the defensive end earlier in the day.
According to the report, Garcia had knocked on Keeler's door, and when he got no answer, he kicked the door down, found Ryan unconscious and noted the 20-year-old was "cold to the touch." He then called 911, the report states.
Police also noted in the documents Keeler was found deceased laying face-up in his bed. They said an empty prescription medication bottle was found at the scene.
Keeler had just joined the UNLV football team in 2022 -- after he transferred from Rutgers following his freshman season. In his lone year with the Rebels, he played in two games ... recording a sack and eight total tackles.
RIP.