They had been arguing for days, according to investigators' early review of the case.

The source of the disagreement between a husband and wife in Starr remains unclear, according to Sgt. J.T. Foster with the Anderson County Sheriff's Office.

What investigators have learned, Foster said, is that when the couple started fighting again shortly before noon Monday, they both had weapons.

"What we are hearing from the husband is that his wife started advancing on him," Foster said. "And he shot her."

The bullet hit the woman in the shoulder, Foster said.

Previously:Woman in her 70s shot at a home in Starr, Anderson sheriff's office says

Her husband, who is 58, called 911 to report he had shot his wife, according to an incident report obtained from the Sheriff's Office.

The Sheriff's Office originally told media outlets that the shooting occurred on Gentry Road in Starr, but it actually happened at the couple's home on Brooks McGee Road, roughly a mile away.

Gentry Road is where deputies found the 61-year-old woman, injured and "stumbling around," Foster said.

Her injuries are not life-threatening ones, he said.

No charges have been filed in the case, which remains under investigation.

Follow Nikie Mayo on Twitter @NikieMayo or email her at nmayo@gannett.com.