Report: Adrian Peterson's 2-Year-Old Son Beaten By Mother's Boyfriend

Vikings star Adrian Peterson's two-year-old son is in critical condition after allegedly being attacked by his mother's boyfriend Wednesday, TMZ reports.

Police in Sioux Falls, South Dakota arrested 27-year-old Joseph Robert Patterson and charged him with aggravated assault and aggravated battery of an infant, the Argus Leader newspaper reported Thursday.

Patterson is dating the child's mother.

From the paper:

"Sioux Falls Police Lt. Blaine Larsen said Patterson was the only one home with the 2-year-old boy on Wednesday. The boy lived there with his mother and her boyfriend, Patterson.

'It was a fairly new relationship,' Larsen said.

"Patterson called police at 5:43 p.m. Wednesday, reporting the child had choking injuries."

Peterson left Minnesota Vikings practice yesterday to deal with what the team called a "personal matter."