An off-duty Gwinnett County sheriff's deputy was shot and killed, and a teenager was injured, after a domestic dispute turned deadly in Forsyth County on Saturday night, authorities said.

The Forsyth County Sheriff's Office said deputies were called around 7:49 p.m. to the Villages at Shakerag subdivision after a 911 caller reported that her teenage neighbor showed up at her door bleeding. The teen told the neighbor his mother and her boyfriend had been arguing when the man opened fire.

The neighbor applied pressure to the teen's wounds until paramedics arrived. The teenager was taken to a nearby hospital with multiple gunshot wounds and is in stable condition.

Deputies entered the home after getting no response and found a woman — later identified as an off-duty deputy with the Gwinnett County Sheriff's Office — dead in an upstairs bedroom.

Investigators identified the suspect as 43-year-old Eric Sumner of Suwanee. Detectives tracked him traveling south on I-75 and alerted the Monroe County Sheriff's Office, which located him. After a brief chase, Sumner was arrested and taken into custody.

He is being held in Monroe County until he can be returned to Forsyth County, where he faces charges of homicide and two counts of aggravated assault with intent to murder. Additional charges are possible.

The off-duty sheriff's deputy has been identified as Tamara Tuitt-Bartlett, a 20-year veteran of the Gwinnett County Sheriff's Office. 

Forsyth County Sheriff Ron Freeman called the shooting a devastating loss.

"The loss of life to violence is senseless, but the loss of a law enforcement officer should hit home to every one of us in a community," Freeman said, thanking Monroe County deputies for their quick response.

The Gwinnett County Sheriff's Office also released a statement:

"It is with profound sorrow that Sheriff Keybo Taylor and the Gwinnett County Sheriff's Office announce the loss of Master Deputy Tamara Tuitt-Bartlett, who was tragically shot and killed off-duty on September 27, 2025. Master Deputy Tuitt-Bartlett served our community for nearly 20 years with unwavering dedication, compassion, and integrity, truly embodying the core values of the Gwinnett County Sheriff's Office. 

"Her commitment to protecting and serving made a lasting impact on all who had the honor of knowing and working alongside her. Her loss is deeply felt throughout our agency and the entire community. We extend our heartfelt condolences to her family, friends, and colleagues during this incredibly difficult time. As we mourn her passing, we also celebrate Master Deputy Tuitt-Bartlett's life and the legacy of service she leaves behind. She will never be forgotten. Please keep her loved ones in your thoughts and prayers."

The Forsyth County Sheriff's Office Major Crimes Unit is leading the investigation.