No Physical Evidence, but Janitor on Trial in Co-Worker's Slaying

Kentucky trial hinges on a tape gun, suspect's inconsistencies.

— -- A Kentucky janitor is on trial, accused of beating a co-worker, a mother of two, to death.

Prosecutors believe Mockbee’s killer may have used a tape gun (dispenser) to strike the woman. At this point, authorities have not found a tape gun with Mockbee’s DNA, nor has one been linked to Dooley. Indeed, Dooley’s DNA has not been tied to any part of the crime.

Authorities say they started to zero in on Dooley because of inconsistencies in his story.

Initially, police said, Dooley, 38, declined to say he and a co-worker discovered Mockbee’s body, but then his story changed. Additionally, Mockbee’s husband, Dan, who also worked at the plant, told investigators that he’d had disagreements with Dooley in the past, calling him “shady.”

Attorney Linda Tally Smith said Dooley’s actions didn’t add up.

“Every person at Thermo Fisher Scientific noticed things about him that stuck out like a sore thumb,” Smith said.

“I could see it in his face that he was thinking, ‘How did they get that?’” Stahl said.

The motive for Mockbee’s slaying is still unclear, and prosecutors admit they do not have any physical evidence against Dooley, who has pleaded not guilty.

He faces charges of murder, kidnapping and tampering with evidence in a trial that began Sept. 18.