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Joseph Naso makes his closing statements on Friday, Aug. 16, 2013, in Marin Superior Court in front of Judge Andrew Sweet, in San Rafael, Calif.
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Joseph Naso, the 79-year-old man convicted last week of murdering and dumping four women in the 1970s and '90s, is also the prime suspect in the murder of a woman found in Tiburon in 1981, prosecutors disclosed in court Wednesday.

Sharileea Patton was 56 when her body washed ashore near the former Tiburon Naval Net Depot off Paradise Drive. She had been strangled and placed inside two plastic garbage bags.

The reason the case is surfacing now is because prosecutors want to include Patton's murder as even more evidence why Naso should receive the death penalty. Prosecutors are asking Judge Andrew Sweet to let them present evidence about other alleged Naso sex crimes that were excluded from the trial, including the Patton case.

The jury that convicted Naso returns to court next week to decide on his sentence. Naso argued that the jury should not be allowed to hear about the Patton investigation because the allegations cannot be proved.

"What you just heard was a whole lot of gibberish," he told the judge.

Prosecutors Dori Ahana and Rosemary Slote contend that Patton is victim No. 7 on Naso's notorious "list of 10." The list, which was found among Naso's belongings in 2010, is a roster of 10 unnamed women and most of the locations where Naso dumped their bodies, prosecutors said.

Four of the women on the list correlate with the four victims for which Naso was convicted last week, one of whom was dumped west of Fairfax. Prosecutors say the list also includes a Bob Dylan groupie found in Nevada County in 1992, but the evidence did not come together in time to add the case to Naso's trial.

Naso's list also includes a reference to the "Lady from 839 Leavenworth." In addition, investigators found a Naso diary that mentioned a woman with references to Leavenworth, Lake Tahoe and the Los Angeles area.

Patton — who also used the last names Heckert, Duvalle and Withrow — was a former resident of the Los Angeles area and worked for the county sheriff's department. She later moved to Lake Tahoe, but a few weeks before her death, she relocated to the Bay Area in search of work. She listed her address on job applications as 839 Leavenworth St. in San Francisco.

The manager-in-residence at 839 Leavenworth St. at the time was Joseph Naso.

In addition to that evidence, Naso's photography collection included an image of a woman in a fur coat, said Ahana, the prosecutor. Patton's daughter has identified the coat as a rabbit fur coat that belonged to her mother.

"Oh, Jesus," Naso said, smirking skeptically.

Naso was considered the prime suspect in 1981 and gave evasive answers to investigators, Ahana said. He was never charged.

Naso acknowledged that police interviewed him and all the other residents at 839 Leavenworth St., but he said no one knew Patton and there was no evidence she lived there. He said Patton might have used a friend's apartment address on her job applications.

While Naso was awaiting trial on the four murder counts, the Marin County District Attorney's Office convened a grand jury to consider indicting him for Patton's murder as well. In the end, the prosecution dismissed the grand jury and terminated the inquiry without charges. Ahana said the prosecution was close to Naso's trial at that point and there were too many logistical challenges to add Patton charges to the case.

On Wednesday, Judge Sweet said the evidence in the Patton case "adds up" against Naso, but he postponed a decision on whether the jury could hear the allegations as a factor in the death penalty decision. He said he wanted to read the grand jury transcript first.

With the Patton murder, prosecutors have proffered identities for six of the unnamed victims on Naso's "list of 10." The other four listings, as spelled by Naso, refer to the "Girl near Heldsburg, Mendocinco Co.," the "Girl on Mt. Tam," the "Girl from Miami near down peninsula," and the "Girl from Berkeley."

Contact Gary Klien via email at gklien@marinij.com or https://twitter.com/GaryKlien