Newly-released video from Lake Mary Police shows George Zimmerman down on his knees as police approached him Monday during a domestic dispute at his father-in-law's house involving Shellie Zimmerman.

The dashcam video was released ahead of a news conference Tuesday afternoon.

The video shows police telling Zimmerman to get down on the ground, which he does. They then approached him, cuffed him and pulled him out of view. Lake Mary Police said one of the first things they do when approaching a scene is securing everyone, and based on the 911 call they initially believed George Zimmerman may have been dangerous.

Police also released video from the house security camera that was taken during the incident. The video, which is an hour long, shows Zimmerman enter the front door of the house. It also, at one point, shows an iPad being flung outside.

Lake Mary Police Officer Zach Hudson said most people interviewed in the case only saw what happened outside, so it's tough to tell who started the confrontation definitively. What they do know is that the confrontation started over belongings.

Police said Shellie Zimmerman, her father and someone else showed up at the house, followed by George Zimmerman and his party. They said video was being taken with an iPad as the two parties divvied up belongings.

Hudson said the agency has been unable to extract video from Shellie Zimmerman's iPad, which Shellie said George Zimmerman broke. Police said it is not clear who actually broke the iPad.

Police said George Zimmerman claims Shellie Zimmerman struck him with the iPad. The iPad was running during the confrontation, and once they see what is on the tablet, they'll have a better idea as to whether charges will be filed against someone in the case.

The video that they have so far is inclusive, making the iPad video the key piece in the case. The Seminole County Sheriff's Office is working to extract the info from the tablet.

The charge that might come out of this case would be domestic battery, either for George or Shellie Zimmerman.

Shellie Zimmerman frantically called 911 Monday, telling dispatchers George threatened her and her father with a gun. She later changed her story and said she would not press charges.

At a news conference Tuesday, Hudson confirmed Zimmerman did not have a gun at the scene Monday. Police found no weapon after searching him, and no one who witnessed the domestic disturbance saw him with a gun.

Zimmerman may not have spent the night at the home, where he has been living since his acquittal in July of murder charges for shooting and killing 17-year-old Trayvon Martin in Sanford last year.

O'Mara not representing Zimmerman in divorce

George Zimmerman's attorney, Mark O'Mara, said the whole thing was a disagreement, adding emotions were high after Shellie Zimmerman filed for divorce last week.

"The reality is what happened here, it is a divorce case," said O'Mara. "These people have been living for 16 months under the spotlight, and you know, they're suffering from it. I think the divorce, itself, is a fallout from the whole case and is now showing up with people acting inappropriately."

O'Mara told CNN he is not representing George Zimmerman in the domestic case, or in his divorce case. He is, however, still the attorney of record on Zimmerman's defamation lawsuit against NBC. Pennsylvania attorney Jim Beasley will be the lead attorney on the case.

O'Mara added his only obligations remaining from his defense of Zimmerman during his murder trial are outstanding issues with sanction motions and recovery of costs from the state of Florida for trial expenses.

Though Shellie Zimmerman said she would not press charges, our legal analyst, Mark NeJame, said that doesn't mean police or the State Attorney's Office wouldn't, either.

"I think she realized that maybe he wasn't going for a gun," said NeJame. "With that said, I don't think that forgives the situation, the irresponsible situation that he potentially placed himself into. He's got an estranged wife. He goes to the property. [She thinks he may have] a gun with him -- and we already know with that one incident he had a gun, and it became emotionally charged. And according to the report, there was a woman in the car with him, and that's just throwing fuel to the fire."

Police said they are also going through video recorded from officers' cruisers and body cameras.