here is statement that opposes what you posted. from the LASD. april 2016:
He is not considered a suspect by the Los Angeles County Sheriff's Office.
and from november 2016, months after receiving "evidence" from CCIRI:
The official cause of Natalie Wood’s 1981 death remains accidental drowning, as investigators say they have found nothing to dispute that in the two months since they
re-opened the case. “
At this point, it is an accidental death,” William McSweeney, chief of detectives for the Los Angeles County Sheriff’s Department, tells the
Los Angeles Times. “Nothing has been discovered to suggest changing that at this time.”