A 24-year-old woman who fatally shot her boyfriend during an altercation at their Baton Rouge apartment Saturday evening has been questioned by detectives but hasn’t been arrested, a police spokesman said Sunday.

Louis Williams, 35, was shot in the chest about 5:30 p.m. Saturday and died inside the apartment he shared with his girlfriend at the Zion Terrace complex, 5958 Cadillac St., police and the man’s aunt said Sunday.

Williams and his girlfriend had been together for about three years, and the two planned on getting married, said Rosalind Williams, the victim’s aunt.

Cpl. L’Jean McKneely, a spokesman for the Baton Rouge police, said the 24-year-old woman, who hasn’t been identified, was at the scene of the shooting when officers arrived and was detained for questioning but has since been released.

The shooting came at the end of a verbal and physical fight between the two, McKneely said, and detectives discovered “signs of physical abuse” in the relationship.

It wasn’t clear if police had been called to the apartment before Saturday, though a neighbor told The Advocate that the couple frequently argued. No prior arrests for domestic violence were listed in court records for the victim.

Rosalind Williams described the couple’s relationship as occasionally tumultuous and marked by arguments. But the aunt said she never knew of any of their spats turning physical before Saturday.

“They had a history of fussing and stuff,” Williams said. “He’d pack up his stuff and leave, then she’d let him back in.”

Williams said her nephew had gotten home from his job working on a garbage truck shortly before the shooting.

“He was coming home to take a bath,” the aunt said. “They got into it, and she shot him.”

McKneely said detectives are still actively investigating the shooting and haven’t yet decided whether to seek an arrest.

Williams said the news of her nephew’s death, delivered to her Saturday evening by family friends, has left her and many of his relatives devastated.

“He came around here every day,” Williams said as she choked back tears in the living room of her home Sunday afternoon. “He’s always been with me. He always stays with me.”

Louis Williams leaves behind five young daughters, his aunt said. She said he had turned his life around after a short stint in jail and was working hard to support his family.

He spent much of his free time hanging out with family, she said, and playing basketball with friends.

“He was a fun guy,” Rosalind Williams said. “Everybody knew him and liked him.”

An autopsy is scheduled for Monday morning, said Dr. William “Beau” Clark, the East Baton Rouge Parish coroner.

Rosalind Williams and Tanya Williams, Louis’ sister, said they’ll begin the week by visiting the Coroner’s Office and making funeral arrangements for Louis Williams.

Follow Bryn Stole on Twitter, @BrynStole.