LANCASTER COUNTY, Pa. (WHTM)– A woman is charged with murdering her grandmother in Lancaster County, according to troopers.

Shasta Sigman, 24, faces charges of murder of the third degree, involuntary manslaughter and aggravated assault, a news release from Pennsylvania State Police reads.

According to the criminal complaint, an autopsy showed that 82-year-old Mary Sigman had numerous fractures in her neck and her cause of death was ruled to be a homicide from a traumatic neck injury.

The investigation began after troopers arrived at a home on Sigman Road in Providence Township just after 11:30 a.m. for a report of Mary in cardiac arrest.

State Police say they discovered that Shasta allegedly pushed Mary, who then fell to the ground and hit her head against a wall during a domestic dispute. Mary lost consciousness and went into cardiac arrest.

Mary was rushed to Lancaster General Hospital after medical personnel arrived at the home, however she was later declared deceased.

In an interview with troopers, Shasta described putting both her hands on Mary’s chest and shoved her during an argument. It was noted in the complaint that Shasta understood that she is the one who caused the neck injuries to Mary.