The 8-year-old nephew of Atatiana Tay Jefferson, the Black woman fatally shot in her own home by a Texas police officer Saturday, witnessed the killing, an attorney for Jeffersons family told HuffPost.

Lee Merritt, a civil rights attorney representing Jeffersons family, said the boy will begin counseling Monday in the wake of his beloved aunts death.

A Fort Worth, Texas, police officer shot Jefferson through a bedroom window from outside her home around 2:30 a.m. Saturday while conducting a wellness check of the residence. A neighbor had called the police departments non-emergency line to express concern that a door to the house was open.

Video from the body camera worn by the officer who fired the shot shows him entering the backyard of the house, turning left, suddenly grabbing for his gun and pointing it at the window.

Put your hands up! Show me your hands! he can be heard shouting before immediately firing one round through the screen window.

The officers then entered the house and provided emergency medical care to Jefferson, but she died at the scene, officials said.