41-year-old man, Fernando Vergas has pushed his mother, Carlota Vargas out of a window of a second floor apartment to her death in the early hours of Monday in Van Nuys, Los Angeles.
Witnesses said the son then jumped out of the window and was seen stomping on her head, KTLA reports. Eyewitnesses said the incident 'was horrible' and that the son said 'she was going to die anyway and it didn't matter', if he stomped on her.
The woman was transported to Providence Holy Cross Medical Center, where she was pronounced dead.
Investigators said the attack was sparked by a domestic dispute, but further details were not immediately available, according to the local station.
Vargas, who suffered a leg injury, was booked into custody on suspicion of murder.