Update: Adrian Peterson has turned himself in and was released on $15,000 bond.
Peterson is expected to turn himself in, according to FoxSports.com. Peterson missed practice on Thursday, an absence that Vikings coach Mike Zimmer described as a normal day off for the 29-year-old, Zimmer said.
Ian Rapoport, a reporter with the NFL Network, tweeted that the charge stems from an incident in which Peterson disciplined his son with a branch.
Sports Radio 610 in Houston obtained a draft of the police report which says Peterson admitted that he did, in his words, "whoop" one of his children last May while the boy was visiting him in Houston, according to CBS Minneapolis.
When the boy, 4, returned to his mother in Minnesota, she took him to a doctor. The police report said the boy told the doctor that Peterson had hit him with a tree branch.
Rapoport adds that the investigation has been going on for a while and that Peterson testified before a grand jury "weeks ago."
The grand jury, seated earlier this summer chose not to charge him. An investigator who questioned Peterson said the running back considered it a normal spanking.
The Montgomery County sheriff Tommy Gage issued a warrant for Peterson's arrest, but said he was not in custody yet.
Peterson's lawyer, Rusty Hardin issued a statement acknowledging Peterson's knowledge that he had been indicted and emphasizes that Peterson is cooperating with the authorities. He called him a "loving father."
"It is important to remember that Adrian never intended to harm his son and deeply regrets the unintentional injury," Hardin said.
The Vikings issued a statement Friday saying the team is "gathering information regarding the legal situation involving Adrian Peterson," and deferring questions to Peterson's attorney.
Peterson gave no indication charges were pending when he was interviewed this week by CBS Minnesota .
"As far as body wise, I feel as good as I've ever felt," Peterson said in the interview.
The Vikings have deactivated Peterson from their lineup for Sunday's game against the New England Patriots.
Earlier Friday, Peterson posted a tweet on faith, but did not comment on the allegations against him.