WALTON COUNTY, Ga. -- An argument between two siblings ended with gunfire Friday night in Walton County.

Authorities said Cynthia Lundy, 33, of Social Circle, Ga., was shot in the chest area by her 20-year-old brother.

Authorities said Bret Grant exchanged words with the victim at her residence in the 100 block of Forest Avenue. Authorities said Grant got a weapon out of his vehicle and shot his sister.

Authorities said it is unclear what sparked the argument between the two siblings.

Authorities said the victim lived at the residence with her husband.

Walton County authorities took Grant into custody. He is charged with felony murder.