Possible blood found in car linked to Rachel Cooke case

In April, the Williamson County Sheriff's Office announced an update in the Rachel Cooke case, 16 years after she disappeared. 

Officials received a tip about a vehicle linked to Cooke's case that was found in the Dallas area. FBI forensic analysts have since spent hours collecting possible evidence. 

Preliminary tests indicate a possible presence of blood in the passenger side floorboard and door of the white 1998 Pontiac Trans Am. Officials say more testing is being done. 

Cooke disappeared in January 2002 while running near her parents house in Georgetown, Texas. A $50,000 reward is being offered for information that leads to the location of Cooke.