Though Myers did not know why the Hales were pretending to fight, he said the argument turned serious as Charles Hale became angry about being kicked.
As the two began fighting for real, their son, Frank Hale, 18, came out of his bedroom and joined the argument, Myers said.
Frank Hale returned briefly to his room and came back with a gun. He allegedly shot his father three times, twice in the upper right chest and shoulder area and once in the back of the neck, Myers said.
Charles Hale was taken to Pioneers Memorial Hospital in Brawley where an Imperial County Coroner's Office investigator was called to around 10:45 a.m.
Frank Hale did not try to flee the scene of the shooting, Myers said. As of mid-afternoon Saturday, police were questioning Frank Hale and were expected to arrest him on suspicion of murder, Myers said.
Though the gun used in the shooting was registered to Sandra Hale, it was considered Frank's, Myers said.
When asked what motivation Frank Hale may have had to shoot his father, Myers said he did not know and added the investigation is ongoing.
Staff Writer Kelly Grant can be reached at 337-3441.