Over the last few hours, TMZ has been reporting on an incident at the home of Tito Ortiz and his long-time girlfriend Jenna Jameson.  Jameson's father called 911 at 9:53 AM local time to report a "disturbance" at the residence, and Ortiz was escorted from the home in handcuffs in a moment that TMZ caught on videotape:

Ortiz was then taken to a Huntington Beach jail while Jameson (accompanied by her father, a retired police officer) told a TMZ photographer that would be pressing charges against Ortiz and that she and their children would be fine as long as he was in jail:

At F4WOnline.com, it's being reported that ten police cars were sent to the scene because Ortiz was involved, as well as that the police report noted that Jameson had "visible injuries" when the police arrived.

Update #1: Jameson just posted this on Twitter:

I'm sorry to all of my fans, but I'm going to be quitting Twitter. I cant take any more abuse from ANYONE.. To my sweet fans...thank you

Update #2: Dana White told TMZ that Ortiz will be fired if the charges hold up:

We're gonna be fair, but we could cut him...Other than going on a killing spree, being accused of domestic violence is the worst thing you can have going for you.