Elizabeth Lightfoot's murder case has baffled Dallas police, after they found out the victim was alive when her car was set ablaze on Friday morning. Oak Farms Dairy is offering a $10,000 reward in connection with the death, the police department revealed on Tuesday.

At around 2.30 a.m last Friday, Lightfoot's car was found in flames on the 16000 block ofPreston Road in Dallas. The 22-year-old victim, who was found in the car seat, died of Carbon monoxide poisoning from the fire.

We believe someone intentionally set the car on fire with her in it while she was still alive, said police spokesman Sr. Cpl. Kevin Janse.

The fire has made it difficult to find the details of the suspected murder. Police do not understand why Lightfoot did not leave the car, saying that she must have either been unconscious or drugged.

Police have taken to retracing Lightfoot's steps on the night of the murder and are currently investigating footage from surveillance tapes from businesses in the strips were she dies, Wfaa.com reported.

That is something the detectives are going to try and figure out - who was last seen with her? Who she may have called... but as far as we know, we don't know if she knew her attacker or not, Janse said.

Some people have already started giving information through social media outlets. Did the police take into account that the right lane of north bound Preston road has been blocked off and it is very easy to be forced on to the access road and into the strip center?, Sean Doyle  wrote on the  Dallas Police's Facebook page.

Lightfoot who worked at Salon Republic as a stylist was last seen with her friends at a restaurant on Friday evening, but later left to go home alone.

Oak Farms Dairy will pay $10,000 for information leading to the arrest and indictment of the person or persons responsible.  Anyone with information is asked to call the Dallas Police Homicide Unit at 214-671-3661, the Dallas Police department wrote on their Facebook Page.