The cold case murder of a mother in 1988 has been finally solved thanks to DNA evidence found on a chilling letter sent to a local newspaper decades ago with intimate details of the crime.

Anna Kane was 26 when she was strangled to death and her body found on 23 October 1988 along a trail in Perry Township in the state of Pennsylvania.

Nearly 35 years after her death, her killer has been identified using breakthrough DNA genealogy technology, a local official said.

He was named as Scott Grim during a news conference on Thursday.

After the 1988 murder, DNA evidence was collected from Kane’s clothes. An undetermined male DNA profile showed up, but no match was found.

In 1990, the Reading Eagle newspaper ran a front-page story about Kane’s murder, asking for help with information in the case.

Read more: NBC