Jenna Nielsen

Jenna Nielsen, a pregnant newspaper carrier, was stabbed to death outside a Raleigh, NC convenience store two years ago. On Wednesday, investigators revealed that they had DNA evidence in this unsolved murder. The murder victim's husband, Tim Nielsen, told CNN recently that the police never disclosed the existence of this DNA evidence.

She was working her new job on a newspaper delivery route she'd taken to help her young family make ends meet. That's when police say she was stabbed to death in front of a convenience store in Raleigh, North Carolina -- a crime that has police and family members still looking for answers. Marking the two-year anniversary of his wife's death, with no arrests and no named suspects announced by police, Tim Nielsen can only shake his head when he ponders who may have targeted his wife.

"I believe she was just at the wrong place at the wrong time," said Nielsen, who has returned to his native Utah, where his family helps him raise his two children -- Schyler, 5, and Kaiden, 2. "My wife had no enemies." Police say that two years ago last Sunday, Nielsen arrived at the AmeriKing Food Mart about 3:30 a.m. to deliver papers. She'd parked and just finished loading the newspaper vending machine when she was attacked on the way back to her car.