The news source reports that the incident involves a different son, 4, from the alleged victim in the Montgomery County case.
According to KHOU, the boy's mother, also reportedly different from the Montgomery County case, texted Peterson a photo of the child with a head wound that was covered by two bandages. The boy was allegedly left with a scar over his right eye, shown in photos reportedly taken weeks later.
The news source reports that part of Peterson's text message conversation with the mother over the incident went as follows:
Mother: "What happened to his head?"
Peterson: "Hit his head on the Carseat."
Mother: "How does that happen, he got a whoopin in the car."
Peterson: "I felt so bad. But he did it his self."
Former chief prosecutor of family crimes in Harris County Randy Burton spoke to KHOU, referring to the incident as "absolutely criminal."
"You break the skin, you have bleeding, much less permanent scars, that is a crime,"
While sources tell KHOU that the mother filed a report with Child Protective Services, reportedly no charges were ever filed.
"This is not a new allegation," Peterson's lawyer Rusty Hardin told ET in a statement. "It's one that is unsubstantiated and was shopped around to authorities in two states over a year ago and nothing came of it. An adult witness adamantly insists Adrian did nothing inappropriate with his son. There is no ongoing or new investigation."
This news comes after Peterson was released on bond after being indicted on a charge of child abuse. The Minnesota Vikings running back admitted to striking his four-year-old son with a tree branch (called a "switch"), but maintained that the welts allegedly found on the child's body were the result of a "normal whooping." The child was allegedly left with cuts and bruises to his back, buttocks, ankles, legs and scrotum, as well as defensive wounds to his hands.
The NFL is facing heat with running back Ray Rice as well. Watch Terry Crews speak out on the Ray Rice controversy below.