MARTIN COUNTY — A man was shot and killed by his girlfriend Sunday night in what sheriff's officials are calling a case of what appears to be self defense.

"The victim (woman) called 911 immediately and sounded hysterical on the phone, stating that her boyfriend threw something at her and she shot him," Martin County Sheriff, William Snyder said. "The victim began CPR to no avail and the suspect was pronounced dead at the scene by Stuart Fire Rescue."

Snyder said he believes the shooting was in self defense. Sheriff's spokeswoman Christine Christofek said there likely will not be any charges or arrests in the case.

Deputies said the shooting happened around 5 p.m. in the 100 block of Southeast Trafalgar Terrace, located in Leisure Village, which is where the man's mother lives.

The woman, Stacey Sabo, told deputies she was driving in her mother's car after work and got into an argument with Brock Dion over the phone about him drinking alcohol and driving Sabo's car.

Sabo, 46, told deputies when she got to Dion's mother's home, she told Dion she wanted her car keys and Dion picked up a bucket and threw it at her.

Dion, 38, then picked up a rock and threw it at her, at which time Sabo got her concealed weapon and shot him once in the chest, she told deputies.

Sabo, of the 2300 block of Southeast Maslan Avenue in Port St. Lucie, told deputies she then called 911 and started giving first aid. Sabo told deputies Dion has a history of being violent with her.

Deputies said shortly after they arrived, Dion was pronounced dead.

Dion's mother told deputies she was inside when the shooting happened, but heard a commotion and then saw Dion on the ground.

A neighbor told deputies she heard a gunshot nearby and looked outside and saw Sabo kneeling over Dion and screaming that she had shot someone.

Records show Dion was arrested in the past on charges of repeated violence, driving under the influence, driving with a suspended license, fleeing or eluding law enforcement and more.

"This is what appears to be to us a clear case of self defense," Snyder said.

Snyder said the investigation is ongoing and the agency is awaiting autopsy results.

The case will be reviewed by the state attorney's office, which will decide if the shooting was a matter of self defense or if any charges will be filed, sheriff's officials said.

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