MADISON, Wis. -- Dane County sheriff's detectives have arrested a Waunakee man on suspicion of one count of physical abuse of a child.

Authorities said that David A. Roberts, 20, is being held in the Dane County Jail.

Waunakee police and Waunakee EMS responded to a residence on Knightsbridge Road in Waunakee Tuesday around 9:30 a.m. after the mother of a 3-month-old called 911.

Authorities said the 3-month-old was immediately transported to the University of Wisconsin Hospital Emergency Room with life-threatening injuries.

Authorities said the child, Roberts' biological son, died Wednesday afternoon at UW Hospital.

The Dane County Sheriff's Office, Dane County Coroner's Office and Waunakee police are continuing to investigate the circumstances surrounding the baby's death.