But the investigation could be wrapped up by the end of the month.
The same day ET obtained exclusive surveillance video of Caitlyn Jenner’s February car accident, which involved four cars and caused one fatality, the detective in charge of the case said the investigation is "still ongoing."
EXCLUSIVE: Surveillance Video Shows Caitlyn Jenner Fatal Car Crash
Jenner has not been criminally charged in the case, but is the subject of two civil lawsuits in the matter, including a wrongful death suit.
Det. Richard Curry of the Malibu/Lost Hills, California, Sheriff’s Department told ET on Thursday that the investigation has been held up by "report writing" but that they are "hoping to wrap it up by end of the month." Investigators have said they will use the recently released surveillance footage of the accident to help determine who was at fault.
NEWS: Family of Woman Killed in Car Crash Blasts Caitlyn Jenner After Surveillance Footage Revealed
In California, all traffic fatalities are subject to a criminal investigation. It’s up to the District Attorney’s office to determine whether or not to file any charges, though they cannot be presented with the case until the Sheriff’s investigation is complete.
"We do not have the Jenner case," a representative from the Los Angeles DA’s Office told ET on Thursday. "It's still an ongoing investigation and has not been presented to us."
Jenner cooperated with investigators at the scene of the accident, passed a field sobriety test, and voluntarily submitted a blood sample to determine whether she was intoxicated at the time of this accident.
Following the crash, and again on Thursday, Jenner said in a statement that the incident was "a devastating tragedy."
WATCH: Exclusive First Footage of Caitlyn Jenner's Car Crash