Jen Harley: Ronnie Threatened to Flat-Out MURDER Me!

New details have emerged in regard to the recent arrest of Ronnie Ortiz-Magro.

And they paint an even darker picture of the Jersey Shore star than before.

Why does Jen Harley have a restraining order against her baby daddy?

Why can Ronnie not go anywhere near his 18-month old daughter, Ariana?

What are the details behind this disturbing incident?

Scroll down for the latest...

1. Things Look Very Bad for Ronnie

The veteran reality star was arrested for assault early on the morning of October 4 after an argument between him and Harley turned physical.

2. That's Awful. What Happened?

At one point, Harley allegedly made a run for it, escaping the Los Angeles home she and Ronnie were renting... with toddler daughter Ariana in her arms.

3. What Was She Trying to Do?

There's surveillance footage of Harley seemingly trying to hide Ariana in a car trunk... or maybe leave her with a neighbor. Anything to get her away from Ronnie.

4. YIKES!

We know, right? According to the police report (i.e. from Harley), Ronnie ran after her and took Ariana out of Jen's arms. He then went back inside the home and locked the door.

5. This is When the Police Were Called

Upon their arrival, however, Ronnie refused to let the cops in, forcing them to break down the front door.

6. YIKES, Take Two

That wasn't even the end of it. Ronnie was so out of control that the police had to actually tase him and handcuff him to a gurney. There are photos out there of a shirtless Ronnie being wheeled away by authorities.

7. What the Literal F-ck?

Harley has said Ronnie was acting this way because he was high on cocaine.

8. I'll Cut You, Woman!

She has also alleged that Ronnie held a knife to her upon swiping Ariana from her arms during their outdoor confrontation.

9. Dizzamn. So, What's the Latest?

Jen was granted a protection of order against Ronnie shortly after his arrest -- and we now know the detail behind why it was granted.

10. The Official Report Says...

TMZ has obtained a copy of the emergency protective order, which states: "Suspect told victim he was going to kill her. Suspect pushed victim out the house. Suspect ran after victim."

11. This is New...

... and scary, of course. It's the first we've heard of Ronnie threatening his baby mama's life.

12. What is Spelled Out in This Order?

The document prohibits Ronnie from going within 100 yards of Jen and their 18-month-old daughter, Ariana. He also has been ordered to stay 100 yards away from Jen's home.

13. Wait, Though, There's More!

The protective order papers also detail how Jen tried getting help from neighbors. It reads: "Victim knocked on neighbor's door and set baby on ground. Suspect grabbed baby and dragged victim to the ground. Suspect punched victim with closed fist on face, causing visible injury."

14. This is Also New

It's the first time we've read that Ronnie straight-up punched Harley in the face. Damn, man.

15. What is Ronnie Saying in His Own Defense?

Nothing, not personally at least. But an insider close to the troubled star tells TMZ that Ronnie never threatened Jen and that he was actually the one scared for Ariana's safety.

16. Really? That's His Story?

Yes. Ronnie claims that Jen dangled Ariana over a fence -- and that Ronnie feared his daughter would get hurt because Jen had allegedly been drinking heavily at an event earlier in the day.

17. How Does Ronnie Explain Jen's Injuries?

No comment yet about the bruises on Jen's shoudlers and back that observers can pretty easily see in new photos of Harley.

18. Where Do Things Stand Now?

Ronnie was arrested for kidnapping ... but has not been officially charged with anything. There was a hearing this past Friday to extend the protective order until Ronnie's almost-certain arraignment.