A Warren County man faces aggravated assault charges in the Friday afternoon shooting of his sister.

Warren County Sheriff Martin Pace said Brian Keith Greer, 40, was arrested Saturday morning in Yazoo County.

He is accused of shooting his sister, Heather Blakely Hearn, 47, at her camper off Tiffintown Road.

Pace said a small-caliber handgun was recovered by Yazoo County deputies during the arrest and has been sent to the state Crime Lab for testing.

“This was an argument between a brother and sister and we are confident we have the shooter in custody,” he said.

Hearn was taken by ambulance to University of Mississippi Medical Center. Information on her condition was unavailable.

Greer was arrested about 11:55 a.m. Saturday by deputies with the Yazoo County Sheriff’s Office and returned to Warren County Saturday. He will be held without bail pending an initial appearance Monday in Warren County Justice Court.

Warren County deputies responding to a 5:30 p.m. call Friday about an injured woman in a camper at a campground in the 400 block of Tiffintown Road found Hearn on the floor of her camper with multiple gunshot wounds. Her condition is unknown.

Greer was seen leaving the scene in Hearn’s 2006 Pontiac G6.

Pace said Greer was arrested by Yazoo County deputies responding to a call about a suspicious person walking in a cornfield in the southern part of the county.

The deputies took the man into custody after a brief standoff. He was later identified as Greer from a photograph Pace sent to Yazoo County.

Hearn’s car was later recovered on Ballground Road in Warren County, several miles from where he was arrested.