HAILEY, Idaho -

A central Idaho judge has opened a new post-conviction relief case for an Idaho woman serving two life sentences for killing her parents.

The Idaho Mountain Express reports that 5th District Court Judge G. Richard Bevan signed on order earlier this month for 27-year-old Sarah Johnson.

Johnson's attorney says new analytical techniques for DNA evidence could clear Johnson of the murders.

Johnson was 16 in 2003, when prosecutors say she shot Alan and Diane Johnson with a rifle at the family's Bellevue home.

She was found guilty by a jury of two counts of first-degree murder and was sentenced in 2005 to life in prison without parole.