Wichita man dies after being punched

WICHITA, Kan. (KWCH) -- Wichita police are investigating the death of a man who died following a domestic disturbance Saturday evening.

Police responded to a report of a man who was unconscious at a home in the 1900 block of S. Santa Fe.

The 45-year-old man was taken to the hospital, where he died.

Police talked with the man's 46-year-old girlfriend who reported that the man got into an argument with her 23-year-old son. She says her boyfriend tried to punch her son, but the son punched him once in the head in self defense.

The man lost consciousness.

Investigators believe a pre-existing medical condition may have contributed to the man's death. An autopsy will be conducted to determine the exact cause of death.

No arrests have been made.