Video of Alicia DeBolt murder suspect Adam Longoria shows him buying gas

(CBS/AP/KWCH) GREAT BEND, Kan. - Video surveillance at a convenience store shows a man accused of killing 14-year-old Alicia DeBolt and burning her body bought $1.32 in gas about an hour after the girl was last seen alive, according to police testimony Monday at the suspect's murder trial.

PICTURES: Alicia DeBolt: A Life Cut Short

Gas was found on the teen's body and surrounding soil when she was found August 24, 2010. She was last seen alive at 11 p.m. on August 21, and the surveillance video shows the accused, 38-year-old Adam Longoria, buying gas at 12:07 a.m.on August 22.

The testimony from Denton Doze of the Great Bend Police Department came Monday as the prosecution resumed in the capital murder case against Longoria.

CBS affiliate KWCH reports jurors heard from Great Bend police det. Terry Millard. Millard testified that Longoria was at the DeBolt home shortly after she disappeared, and that Longoria told him he was there to help the family find Alicia, and that he didn't know anything about the disappearance. Millard also testified that Longoria said he didn't know Alicia and that the texting he did with her was on someone else's behalf.

However, Great Bend police agent Heather Smith testified Monday that Longoria said he met Alicia at a party about a month before the disappearance and that he gave her his phone number, but only to make sure she got home safely.

Complete Coverage of Alicia DeBolt on Crimesider