Minutes later the 29-year-old wife and mother was shot dead - ambushed, according Polk's police chief - by a Walker County man with a long rap sheet.
At 1:37 p.m. Eastern, the Georgia Bureau of Investigation issued an alert on social media with a picture of Spangler's face and a warning that he was "considered armed and unsafe".
Polk County Assistant County Manager Barry Akinson tells the paper the officer killed was a Polk County police detective. Keenan said Spangler then drew a gun and shot the officers. He wasn't wearing any clothes when he was arrested.
Before they could finish their story, Spangler whipped out a gun, firing at Goodrich and Hearne at close range.
"It was not common for detectives to wear their vests", Dodd said.
Hearne was rushed to an area hospital, but later died.
Hearne was in plainclothes, wearing a polo shirt, and her bullet-proof vest was left in her vehicle, Dodd said.
There they encountered Spangler and 22-year-old Samantha Ruth emerging from some nearby woods.
Around 2:45 p.m., as officers were securing the perimeter around the scene, Spangler appeared out of the woods and was taken into custody.
Spangler was wanted on outstanding Walker County warrants for probation violation, Keenan said. Both Spangler and Ruth were charged with murder and aggravated assault.
Keenan said Roof will also face charges. Both officers acted bravely, Dodd said.
Chief Dodd pulled aside his entire staff Friday afternoon to brief them on the loss.
Seth Brandon Spangler is taken into custody following his arrest in Det. Hearne's murder Friday afternoon
Hearne is five-year veteran of the department.
Spangler was taken to the Polk County Jail.
"Words can't express the sorrow and the hurt that we feel right now as an agency", Dodd said. "And our hearts go out to the family", the chief said.
The other officer injured in the shooting was identified as David Goodrich, who's reportedly only been on the job for 6 months.
"You always knew when she was present". She was raised there, graduating from Rockmart High School. "Please pray for us, her brothers, cousins, her child, husband, our whole family".
"This was obviously not his first run-in with the law", Dodd said at a news conference.
Keenan said the duo ran from the scene. Atkinson said one of the officers had called the other officer for backup. He said he was overwhelmed by the support he received Friday from the law enforcement community in Georgia.
The chief said he may have to revisit the policy on bullet-proof vests being worn by detectives at all times.
Spangler's next appearance will be in Superior Court at a date and time yet to be determined.
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