Three people whose bodies were found inside a burning pickup truck on June 9 were shot before they were burned, Surprise police said Wednesday.
Police identified the victims as 57-year-old Lisa Baker and 41-year-old William Kling, both of Wittmann, and 25-year-old Garth Tuggle of Phoenix.
Police said autopsies revealed the three had been shot and their deaths are now classified as homicides.
The truck was found about one mile west of 219th Avenue near Sun Valley Parkway after a caller reported the fire about 2:40 p.m., according to Surprise police Sgt. Mike Donovan.
Firefighters extinguished the fire and found the three bodies inside, Donovan said.
Donovan said the area is sparsely populated with some horse farms nearby.
All three victims served time in the Arizona Department of Corrections prison system.
Tuggle was incarcerated for criminal damage and aggravated robbery. Kling served time for marijuana violations and drug paraphernalia. King was in prison for hindering prosecution.
Anyone with information that could help solve the crime are asked to call Surprise police at 623-222-4000, Silent Witness at 480-WITNESS (480-948-6377), or 480-TESTIGO (480-837-8446).
Stay with cbs5az.com and CBS 5 News for updates on this developing story.
[Click here to sign up for breaking news alerts]
Copyright 2014 CBS 5 (KPHO Broadcasting Corporation). All rights reserved. The Associated Press contributed to this report.