Prosecutors were considering Thursday whether to charge Ryan O'Neal with assault with a deadly weapon for firing a gun during a brawl with his older son at the actor's Malibu home.
A sheriff's detective submitted results of an investigation to the Los Angeles County district attorney's office Wednesday.
"The detective presented the charges that were based on the arrest" but didn't make a formal recommendation, said Lt. Steve Smith of the Malibu-Lost Hills sheriff's station.
The case was under review and it was unclear when or whether charges would be filed, said Jane Robison, a spokeswoman for the district attorney.
The actor has said he fired a warning shot to scare his 42-year-old son, Griffin, who had attacked him with a fireplace poker.
He said his son lashed out at him during a fight but he ducked and the poker struck Griffin's pregnant girlfriend.
Joanna Berry needed stitches for a facial cut, her attorney said at a Wednesday news conference that Griffin O'Neal also attended.
Attorney Gloria Allred said her clients rejected the assertion that Ryan O'Neal acted in self-defense.
O'Neal's attorney, Mark Werksman, said Wednesday that his client suffered a cut hand and bruises to his arms and legs during the dispute, which was over how Griffin treated O'Neal's younger son, Redmond O'Neal.