Former Sooner Peterson's 2-year-old son in critical condition after alleged beating

Adrian Peterson's 2-year-old son is in critical condition after being reportedly beaten by the mother's boyfriend.

Adrian Peterson's 2-year-old son is in critical condition at a South Dakota hospital after he was allegedly beaten by a man dating his mother, TMZ reported Friday.

Peterson was seen in Sioux Falls on Thursday. A reporter with the Argus Leader newspaper said Peterson is dealing with a serious medical issue involving a young family member that "will likely be a police matter."

Joseph Patterson, 27, was arrested Thursday night and is charged with aggravated assault and aggravated battery of an infant, TMZ reported. The arrest was made after police and paramedics were called to an apartment at 5:43 p.m. Wednesday and found the 2-year-old victim with injuries "consistent with abuse." has not confirmed that Peterson has any relation to the 2-year-old. The boy injured in the alleged assault has not been named, but it is not Adrian, Jr., the station reported. Vikings communications director told the station that Peterson is expected to practice Friday and hold his regular media availability.