LOS ANGELES (AP) — An attorney for former Symbionese Liberation Army fugitive Sara Jane Olson said Tuesday that she did not take part in a bank robbery in which a woman was killed.

Olson made a court appearance Tuesday on a first-degree murder charge, four days after she was sentenced to 20 years to life in prison for attempting to blow up Los Angeles police cars.

Olson has pleaded innocent to a charge that she and other SLA members killed Myrna Opsahl, a 42-year-old mother of four, during the bank robbery on April 21, 1975.

"She is innocent, she is confident she will prevail," said Shawn Snider Chapman, Olson's attorney, after her appearance Tuesday in Sacramento County Superior Court. "She was not there."

William and Emily Harris entered no formal plea during their Sacramento arraignment Friday, although Emily Harris' attorney has said both are innocent. Michael Bortin is fighting extradition to California, while a fifth man, James Kilgore, 54, has been a fugitive since the 1970s.

All were charged last week with committing first-degree murder during the robbery of a Crocker National Bank branch in suburban Carmichael, near Sacramento.

Prosecutors allege all but William Harris were inside the bank when Opsahl was shot trying to deposit a church collection. Harris stood watch outside, Sacramento County District Attorney Jan Scully said. The robbery netted the SLA about $15,000.

Olson, 55, changed her name from Kathleen Soliah and was a Minnesota housewife until her June 1999 arrest on the bomb charges.

Investigators reopened their probe after Olson's arrest. They say they have new evidence linking the SLA members to the robbery and murder, including matching Olson's palm print with one found on the door of a Sacramento garage where the group allegedly stored a getaway car.

Chapman disputed that there was new evidence, saying she believed charges were brought because Scully and Sacramento Sheriff Lou Blanas face re-election this year.

Prosecutors have said much of their case will be based on testimony from newspaper heiress Patricia Hearst, who was kidnapped by the SLA and later joined them in several bank robberies. She said she drove one of the getaway cars during the Carmichael robbery, but she was granted immunity from prosecution as a condition of her 1991 grand jury testimony.

Chapman called Hearst's claim "pure fantasy."

"Her testimony is in direct conflict with all the other evidence and testimony in this case. She's not a credible witness."

Olson was expected to return to court Feb. 1 for a bail hearing.