WASHINGTON (CBSDC) – Sioux Falls Police have confirmed the 2-year-old son of Vikings running back Adrian Peterson has died, after allegedly being assaulted by another man who’s believed to have been dating the child’s mother.

The boy, who’s name has been withheld, was reportedly found unresponsive and rushed to the hospital around 5:45 p.m. on Wednesday. Joseph Robert Patterson, 27, of Sioux Falls, has been charged with aggravated assault and aggravated batter on an infant, police say.

Update: Peterson First Met His Son in the Hospital

Nelson Peterson, the NFL star’s father, confirmed to the St. Paul Pioneer Press that the child is his grandson. He also said the child was not Adrian Peterson, Jr., who’d been seen with Adrian around the Vikings facility.

“All I can say is, we are asking for prayers and for respect for our family as we deal with this tragic situation,” Nelson Peterson told the paper.

The Vikings said Thursday Peterson had been excused from practice to deal with a personal matter. He left to be with his child in South Dakota, but was back at the team facility Friday.

He confirmed to reporters on Friday he will still play Sunday against the Panthers.

The Lincoln County State’s Attorney’s Office will be reviewing consideration of additional charges. Patterson has made his first court appearance and is being held on $750,000 bond.

Report: Adrian Peterson’s Son In Critical Condition, Beaten By Mother’s Boyfriend