Police say Shellie Zimmerman called 911 at 2:10 p.m., saying George Zimmerman was holding her and her family at gunpoint. She said her estranged husband punched her father in the nose.
"My dad has a mark on his face. I saw his glasses were on the floor. He had accosted my father and then took my iPad out of my hand and then smashed it and cut with a pocketknife," she told dispatchers.
In the 911 call, Shellie Zimmerman told dispatchers that George Zimmerman had "his hand on his gun" and threatened to shoot if she stepped closer.
"I don't know what he's capable of. I am really, really scared," she said to the 911 dispatcher.
Officers were sent to the home in tactical gear with ballistic shields. George Zimmerman, who was acquitted in July in the death of Trayvon Martin, was handcuffed and questioned by police. But he was not arrested because Shellie Zimmerman and her father refused to give police a sworn statement and said they do not want to press charges.
Shellie Zimmerman initially told dispatchers that her husband had his hand on his gun, but she later told police she never saw the gun.
George Zimmerman said in his statement to police that he was only acting in a defensive manner during the incident. He also said that he did not have his hand on his gun.
George Zimmerman's attorney says his client did not use a gun to threaten his wife or her dad, nor did he punch his father-in-law in the face.
According to police, George Zimmerman is free to go and is cooperating with police. At this time, there are no charges pending against anyone involved in the confrontation, but officers are reviewing surveillance video. If they find anything in the video, they reserve the right to file charges.
Shellie Zimmerman filed for divorce last week. In an interview with ABC News, she said she was not sure if she "ever really knew" her husband during their seven years of marriage. She also said she believed her husband's acquittal left him feeling "invincible."
Since his acquittal, George Zimmerman helped a family whose car overturned and he has been pulled over twice for speeding.