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Sister of suspect among 2 people killed in Douglas County home

Bryan Gray and Jessica Mitchell were found dead in a garage in southeast Douglas County Tuesday afternoon, the sheriff's office said.

DOUGLAS COUNTY, Colo. — The sister of the suspect who was arrested in Kansas in connection with a double homicide near Franktown is among the two people who were killed, the Douglas County Sheriff's Office (DCSO) confirmed.

Law enforcement tracked down the suspect, identified as 28-year-old Casey Michael Devol in Salina, Kansas, on Wednesday. He was wanted for the killing of two people were who found dead in the garage of a home southeast of Franktown Tuesday afternoon.

DCSO Sheriff Tony Spurlock said the man and woman were found dead around 1:30 p.m. Tuesday in a home in the 2100 block of Russellville Road in southeast Douglas County. It's believed the pair, identified as 34-year-old Bryan Gray and 32-year-old Jessica Mitchell, were killed late Monday or early Tuesday. Mitchell is Devol's older sister, Spurlock said.

Credit: Saline County Kansas Sheriff's Office
Casey Devol

The Salina Police Department (SPD) in Kansas said they received a "be on the lookout" from DCSO about Devol after cell phone data indicated he was in Salina near Interstate 70. SPD officers responded to that area to search for Devol and around 7:40 p.m. local time, officers spotted his vehicle behind the Super 8 Motel on Diamond Drive.

"They saw the gold F-250 Ford pickup truck and standing outside of it was our suspect and so they made contact with him outside the vehicle outside the hotel and he gave up peacefully," Spurlock said Thursday.

He was taken into custody at that location and is being held in the Saline County Jail in Kansas where he will wait for extradition to Colorado. Detectives traveled to Kansas and met with him late Wednesday.

"The detectives are going to want to have some more interviews with him and gather those interviews with that what we know at the crime scene and hopefully that will give us an answer to the all-important question, why did this happen."

He's due in court in Kansas on Feb. 11 at 8:30 a.m.

Meanwhile, Spurlock said investigators were still conducting a search on the suspect's house Thursday morning.

The decision to notify the public the day after the initial reports stemmed from when they received information about this particular case at around 1:30 pm Tuesday. Spurlock said they had video of the suspect, but it was 'incredibly grainy.'

"We needed to do a lot of work to try to find out who this person was and so not to alert who we believe the suspect was; we didn’t want to share that until we could verify it,” Spurlock said. "Obviously, we didn't want that person to be tipped off at what we were doing. So we took that advantage once we realized that we no longer had that ability and that he was not at any of the places we thought he was going to be at; that's when we turned to the public for a resource – help."

The sheriff's office then asked the public Wednesday to be on the lookout for Devol.

"We believe that his behavior is very volatile and very dangerous, and he had multiple weapons with him at the time of the murder," Spurlock said.

Spurlock said Devol was at the home for some time and returned to his vehicle several times to retrieve different guns. Investigators believe Devol was a friend of Gray and said Mitchell is his sister. 

Spurlock said their bodies were found by someone who went to the property to conduct business with the victims. Spurlock said Devol had not previously been on the sheriff's office's radar.

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