TMZ reports that Adrian Peterson's 2-year-old son remains in critical condition after allegedly being abused by his mother's boyfriend. Peterson has left Vikings camp and traveled to Sioux Falls to deal with the situation. EMTs arrived on Wednesday afternoon to find a child suffering from injuries that an examination found were "consistent with abuse" according to a police spokesman. TMZ adds that Peterson Jr. was initially unresponsive and suffered head injuries. Joseph Patterson was arrested on charges of aggravated assault and aggravated battery of an infant. According to police the relationship between Patterson and the boy's mother was "fairly new" and they had just moved in with him. Patterson is scheduled to appear in court later this morning.