FULSHEAR, Texas -- Police have released disturbing 911 audio in the case of a Texas mother who police say gunned down her two adult daughters before she was fatally shot by an officer.

Police say Christy Sheats, 42, shot and killed her two daughters , 17-year-old Madison and 22-year-old Taylor, Friday in the family's home outside the Houston suburb of Fulshear. Her husband Jason Sheats, 45, survived.

Madison and Taylor Sheats both called 911 before their mother, Christy Sheats, shot them to death, reports CBS affiliate KHOU. In the calls, Jason Sheats could be heard begging his wife not to shoot them as the girls screamed in the background.

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"Please don't point the gun at us ... I beg you, please put it away," Jason Sheats is heard saying in the 911 call. "I'm sorry. I promise you, whatever you want."

In another call, a neighbor is heard describing the chaotic scene, telling a dispatcher there was a woman in a dress standing over one of the girls lying on the ground. The same caller told a dispatcher the woman went back inside to re-load a gun before opening fire again.

An undated photo shows Christy Sheats. Facebook/KHOU

"She's coming back again. Oh!!! She shot her again. The female that was lying on the ground," the neighbor said.

Maj. Chad Norvell of the Fort Bend County Sheriff's Office told Crimesider a family argument led to the shooting. Norvell said Christy Sheats and her husband were fighting over marital issues.

"The husband and wife weren't getting along," Norvell said.

Prior to the shooting, Sheats convened a family meeting in the living room that was attended by her husband and her daughters, according to the sheriff's office.

"During that meeting, Christy Sheats held up a gun and shot both girls," the sheriff's office said.

Jason Sheats and the daughters ran outside, where Madison Sheats collapsed and died. Jason Sheats ran to the end of a cul-de-sac.

Taylor Sheats was shot again by her mother on the street.

When officers arrived, they saw Christy Sheats shooting one of her daughters in the street, the sheriff's office said.

An officer fatally shot Christy Sheats after she refused to obey commands to drop her handgun. Taylor Sheats was taken to a Houston hospital, where she died.

Police tell Crimesider Madison Sheats was shot once, and Taylor Sheats was shot three times.

Investigators found the murder weapon was a five-shot, .38 caliber handgun.