The last of three defendants arrested after a two-state robbery and murder spree last year pleaded guilty Tuesday in a Long Island courtroom, Newsday reports.

The three were accused in the killings of a Long Island businessman and a couple who owned a jewelry store in Fairfield, Conn., during the robbery spree.

They still face charges in Connecticut and for a holdup in Rockland County.

Nicole Pearce, 23, of the Richmond Hill section of Queens, and formerly of San Marcos, Calif., pleaded guilty to first-degree robbery for her role in a Dec. 21, 2004, stickup in which Glen Head jewelry store manager Thomas Renison was shot and killed, the newspaper reports. She is expected to receive a prison term of 20 years when she is sentenced next month.

Pearce’s boyfriend, Christopher DiMeo, pleaded guilty to murder and robbery charges last month in a plea deal that will get him a sentence of life without parole.

Maryann Taylor, 41, of Hicksville—who is DiMeo’s mother—pleaded guilty to a robbery charge last week and is expected to be sentenced to 15 years. She was suspected of being the getaway driver, prosecutors said.

Nassau County Court Judge Victor Ort is expected to impose sentences on all three on Aug. 10, a spokeswoman for Nassau District Attorney Denis Dillon reportedly said.

Pearce’s attorney, Michael Soshnick, told Newsday.com that his client’s troubles all stemmed from her heroin addiction. “She wasn’t with Chris DiMeo. She was with the drugs,” he said.

An estimated $300,000 worth of rings and bracelets was taken during the robberies, the newspaper reports.

JCK