Twenty-four-year-old Rene Camarillo-Rivera was charged with aggravated assault and injury to a child.
Police say just before one this morning a nine-year-old flagged down police in the 1700 block of Huff Avenue.
They say the child led them to his mother, who was crying in the middle of the road, bleeding from her nose and mouth.
She told police she was chased and threatened with a knife by Camarillo- Rivera when she tried to stop her from punching her son.
She was then taken to the hospital for her injuries.
Police say they later found the Camarillo- Rivera at his residence.
He was taken to jail, where he remains with a more than $40,000 bond.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.