Andrew Shinault, 23, shot a woman in her 20s in the upper body with his registered handgun about 12:30 p.m., the Hillsborough County Sheriff's Office said in a news release.
The shooting occurred at Shinault's home in the Tampa suburb of Valrico. The woman -- whose identity was not revealed -- was taken to a hospital where she later died.
Shinault was charged with manslaughter with a weapon on Friday. He was being held in the Orient Road Jail on a $50,000 bond.