TALLAHASSEE, Fla. (AP) — A Florida woman has been charged with the murder of her 7-year-old grandson.

The Tallahassee Democrat http://on.tdo.com/1sxXoa4 reports that 63-year-old Martha White was charged with first-degree murder Wednesday.

The Democrat cited court documents as saying that White told deputies she was “fed up.”

Leon County Sheriff’s Office spokesman Lt. James McQuaig told the newspaper it was too early in the investigation to determine a motive.

Police say Mason Rhinehart was stabbed multiple times Tuesday, while White was babysitting him and his older brother.

The Democrat reported that deputies found White covered in blood a half-mile from the home. The newspaper also reported that Mason’s older brother told deputies he heard his sibling plead for mercy while in a locked bathroom with his grandmother.

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