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Pro-gun activist Jamie Gilt, 31, of Jacksonville, Florida, reportedly is in stable condition after accidentally being shot by her 4-year-old son.

(From Facebook)

PALATKA, Florida -- A Florida woman, known for her strong pro-gun views, is in stable condition Wednesday after she was accidentally shot in the back Tuesday by her 4-year-old son as she drove her pickup truck.

The shooting occurred moments after Jamie Gilt, 31, of Jacksonville, had put up a post on her Facebook page, "Jamie Gilt for Gun Sense", that her young son gets "jacked up to target shoot," the Washington Post reports. The Facebook page had been taken down as of Wednesday.

Investigators with the Putnam County Sheriff's Department are now trying to determine who the 4-year-old boy managed to gain access to the loaded .45-caliber handgun, the Associated Press reports.

A sheriff's deputy noticed Gilt "behaving frantically" inside her pickup truck just after 3 p.m. Tuesday, according to the Florida Times Union. When he stopped to check on her, she told him she had been shot by her son, who was sitting in a back seat.

A handgun was found on the floor in the back of the truck and there were no signs of bullet entry from outside.

"She was shot through the seat and the round went through her back," sheriff's Capt. Joseph Wells tells the Times Union.

The boy was unharmed.

Wells says there was a child's booster seat in the back of the vehicle, but the boy was not strapped in when the deputy arrived.

The AP reports investigators have not had a chance to question Gilt. It is a misdemeanor in Florida to store or leave a loaded gun where a child has access.

The boy has been returned to his family, but the the Florida Department of Children and Family Services has been notified, according to the Post.