( CNN ) -- Jenna Nielsen was 22 years old , 8½ months pregnant and looking forward to bringing her third child into the world when her life came to a violent and abrupt end on June 14 , 2007 . Jenna Nielsen was driving her newspaper route when she was stabbed to death two years ago . 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 . '' Watch an update » . 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 . Nielsen was stabbed in the neck . Two of her car doors were left open and her purse and car keys were still inside , police said . Authorities will not publicly speculate on a motive . But Jenna 's family believes the attack may have been an attempted sexual assault and that Jenna fought back . Investigators say they have received thousands of tips and interviewed hundreds of people , but they still do n't have a clear picture of a suspect . Laura Hourigan , spokeswoman for the Raleigh Police Department , said investigators remain confident the case can be solved . `` This case is actively being investigated still , '' she said . `` But we have a few missing pieces and hope for the public 's help . '' Early in their investigation , the police released a composite sketch obtained from two witnesses who saw the attacker fleeing the scene of the crime . But they have since backed away from the image , saying it was misleading people . They describe Nielsen 's attacker as a short , slightly built man in his late teens or early 20s with black hair pulled back into a long ponytail . He was wearing a dark sleeveless shirt and baggy blue jeans shorts , according to witnesses . Shortly after Nielsen 's death , a knife was found by a homeless man not far from the scene of the crime . Police wo n't comment on whether the knife might be the murder weapon . There has been other evidence collected . `` They found DNA , but I ca n't say more than that , '' Tim Nielsen said . Other members of Nielsen 's family quote police as saying they have DNA evidence from the killer , but have not been able to match it with anyone they 've interviewed over the years . The family has stayed active in keeping Nielsen 's case in the public eye . They 've held `` Vigils Against Violence '' the last Sunday of every month and maintain justice4jenna.org , a Web site devoted to her memory and to the effort to track down her killer . `` It 's hard to believe that it has been two years since someone selfishly stole you from our family , '' reads the site 's home page . `` There is n't a day that goes by that you and Ethen [ the name planned for her unborn child ] are not in our thoughts . `` Schyler and Kaiden are growing so fast . They look like you , act like you and laugh like you -- for that we are able to see you each and every day through them . Schyler asks about you often and helps Kaiden remember Mommy . '' The family also have been advocates for the so-called Unborn Victims of Violence Act , state legislation that would create a fetal homicide law in North Carolina . Currently , state law does not consider a killing a double homicide when an expectant mother is slain . Jenna Nielsen 's father , Kevin Blaine , takes every chance he can to plead for help from the public . `` Help find the people that did this to her , '' he said . `` The person who did this is still out there . '' The family is offering a $ 15,000 reward for the arrest and conviction of the individual responsible for Nielsen 's murder . Anyone with any information on this crime is asked to call the Raleigh Police Department at ( 919 ) 227-6220 .
Jenna Nielsen was eight months pregnant when she was stabbed to death . Nielsen , 22 , was delivering papers at a convenience store at 3:30 a.m. Police have described a suspect ; family says they have DNA evidence . Know something ? Call ( 919 ) 227-6220 . A reward is offered .