According to the report, officers were called to her home to check on her welfare. After about 90 minutes, Marquez, 49, armed herself with a BB gun and pointed it at the officers, causing them to open fire, said Sheriff's Lt. Joe Mendoza.
Marquez was taken to a local hospital, where she was pronounced dead.
Clooney, in a statement at the time, denied the allegations.
When officers arrived at her apartment, Marquez was having a seizure.
Clooney responded by insisting that he had no idea Marquez had been blacklisted and had played no part in it. Marquez went on to allege that she was subjected racist abuse from actors Anthony Edwards, Noah Wyle and Julianna Marguiles.
United States senator John McCain dead at 81
When Mr Trump blamed him for the survival of the Affordable Care Act, Mr McCain sniffed, "I've faced tougher adversaries". McCain announced that he would instead vote for "some good conservative Republican who is qualified to be president".
Deputy Sheriff Armando Viera Jr., public information officer for the Los Angeles County Sheriff's Department, confirmed Friday that the victim was Marquez.
Marquez may have suffered from mental health issues and became uncooperative, officers said.
Marquez is best known for playing nurse Wendy Goldman on the NBC medical drama between 1994 and 1997. I was an actor and only an actor. Officers later recovered the weapon, which was discovered to have been a BB gun that was made to resemble a semi-automatic handgun. "I take her at her word", the actor said at the time.
Her Twitter account has since been suspended for reasons unclear. She appeared on the "Cheever Letters" episode of "Seinfeld", and had roles in movies "Stand and Deliver" and "Blood In, Blood Out". - She allegedly had a eating disorders and appeared to be disabled at the time of her death. Her final appearance came in the season three episode "Calling Dr. Hathaway". "I met her through #TCMParty, I hope she knew how much we loved her and I hope too that she is at peace", ' @TCMParty tweeted. She appeared in a 2005 episode of A&E's Intervention for depression, OCD and an addiction to shopping.