TMZ reports that lauded San Francisco 49ers quarterback Colin Kaepernick is under investigation for sexual assault. The alleged incident occurred at the Viceroy Hotel in Miami earlier this month.* [Update: TMZ's report was wrong. See update below]

"Our sources tell us ... the investigation is in its "beginning stages" and no charges have been filed against anyone at this point," the gossip hounds report.

In other 49ers (allegedly) behaving badly news, befuddled cornerback Chris Culliver was charged with a felony and two misdemeanors on Tuesday after an alleged hit-and-run incident in March. USA Today reports: "Culliver was arrested on March 28 in San Jose on suspicion of felony hit and run after police said he hit a cyclist. He faces charges of felony possession of metal knuckles, misdemeanor hit and run causing injury and misdemeanor hit and run causing property damage."

*UPDATE: Although media reports (including SFist) initially referred to the case as a sexual assault investigation, the police report, which you can view here [pdf], does not mention an assault. As of now, it's being billed as a "suspicious incident" involving Kaepernick, Quinton Patton, and Seattle Seahawks wide receiver Ricardo Lockett.

SF Appeal has more:

The woman reported drinking alcohol and smoking marijuana, then feeling light-headed and going to a bedroom to lie down.

The woman said Kaepernick, with whom she had a previous sexual relationship, came in and started kissing and undressing her, then “told her that he was going to be right back and left the bedroom,” the report states.

The report states that the woman remained in bed naked and Patton and Lockette allegedly “peeked” inside, prompting her to say, “What are you doing? Where is Colin?”

The woman said she can’t remember anything after that and woke up in a hospital bed. She said she does not know how she got to the hospital, according to the police report.

UPDATE II: The 49ers released an official statement, saying:

The 49ers organization is aware of the recent media report regarding Colin Kaepernick and is in the process of gathering the pertinent facts.