Photo: Henderson County Jail (2)

Monica Figueroa, Mary Johnson

A Texas mother has been arrested and charged with murder after police say that she stabbed her 4-year-old son to death while the child’s grandmother watched.

Monica Figueroa has been charged with capital murder in connection with the death of 4-year-old Grayson Hurt. Her mother, Mary Johnson, has been charged with endangering a child because authorities say she did not immediately report the death.

Police in Athens, Texas, responded to the family home on Monday morning after receiving a call from Johnson. According to apress release, police arrived to find Grayson’s bloody body “inside the door, partially covered with a blanket.”

Henderson County Sheriff Botie Hillhouse toldCBS-19that the child had been dead for several hours when authorities arrived.

Johnson allegedly told cops that she witnessed her daughter on sitting top of a rolled-up blanket on Sunday afternoon. She was stabbing it repeatedly with a wood-handled knife, Johnson allegedly said, according to Sheriff Hillhouse.

“Johnson heard the child screaming before she observed Figueroa cutting at the blanket and then the screaming stopped,” Sheriff Hillhouse told CBS-19. “Figueroa threatened Johnson and instructed her to leave, which she did.”

When Johnson returned to the house the following morning, she contacted authorities.

Want to keep up with the latest crime coverage? Sign up forPEOPLE’s free True Crime newsletterfor breaking crime news, ongoing trial coverage and details of intriguing unsolved cases.

PEOPLE confirms that Figueroa is being held on $2 million bond. Johnson is being held on $250,000 bail. As of Wednesday afternoon, neither woman has bonded out of jail.

Online records do not reflect attorneys authorized to speak on their behalf.

source: people.com