Peterson was booked into the Montgomery County Jail early Saturday morning then released after posting the $15,000 bond. Hours later, Grant briefed the media and released the official indictment of Peterson.
According to the indictment, some time before May 18, Adrian Peterson "did then and there recklessly or by criminal negligence cause bodily injury to a child 14 years of age or younger, by striking with a branch." On Saturday, Grant declined to comment on the child's injuries.
"Given that this is now a pending criminal matter, we are very limited as to what we can comment on but the Montgomery County DA's Office will take this case seriously and we look forward to presenting this case to a jury," Grant said.
Grant says contrary to media reports, this charge only went before one grand jury, and after being presented with evidence for several weeks that grand jury indicted Peterson.
He says the grand jurors decided the spanking was not "reasonable discipline."
Peterson has not spoken publicly about the charges but his attorney, Rusty Hardin, released the following statement on Friday:
- "Adrian Peterson has been informed that he was indicted by a grand jury in Montgomery County, Texas for Injury to a Child. The charged conduct involves using a switch to spank his son. This indictment follows Adrian's full cooperation with authorities who have been looking into this matter. Adrian is a loving father who used his judgment as a parent to discipline his son. He used the same kind of discipline with his child that he experienced as a child growing up in east Texas. Adrian has never hidden from what happened. He has cooperated fully with authorities and voluntarily testified before the grand jury for several hours. Adrian will address the charges with the same respect and responsiveness he has brought to this inquiry from its beginning. It is important to remember that Adrian never intended to harm his son and deeply regrets the unintentional injury."
Meanwhile, the Vikings ruled Peterson out for Sunday's game against New England.
Peterson could face up to two years in jail and up to a $10,000 fine.
The Associated Pres contributed to this report.