A Tennessee woman allegedly killed her own sister and immediately went grocery shopping after the deadly incident, according to authorities.
Brittni Harmon Moore, 27, has been charged with first-degree murder in connection with the fatal shooting of her sister, 25-year-old Brianna Harmon, according to the arrest report, WRCB-TV reported.
The investigation into Brianna's death began Thursday when Moore called 911 from a Publix grocery store in Chattanooga, Tennessee, and allegedly tried to pin the murder on her husband's pregnant girlfriend.
Deputies responding to the Hamilton County home address provided by Moore allegedly witnessed the victim draped in a sheet on a couch, dead from an apparent gunshot wound to the back of the head, according to the outlet.
Moore told deputies she last saw her sister alive that same day, using her phone on the couch. Moore then alleged she took a rideshare to the grocery store, where she subsequently called 911.
Doorbell camera footage allegedly captured Moore going in and out of the home at the time of the alleged murder.
A gun was allegedly found in a vehicle on the property, according to the Chattanooga Times Free Press.
A motive remains unclear.
Moore will appear in court Oct. 21.
