A medical clinic administrator plotted with a co-worker and a personal trainer to murder her husband in a remote North Hall park, authorities believe.

Tuesday’s arrest of Stacey Morgan Schoeck of Snellville on a murder charge came more than three months after Schoeck’s husband, 45-year-old Richard Schoeck, was shot to death in Belton Bridge Park.

Stacey Schoeck called 911 on the night of the Valentine’s Day shooting to report finding her husband outside of his truck, dead of gunshot wounds.

She later gave a statement to investigators, saying she was meeting her husband at the park after driving back from her grandparents’ home in Cleveland.

On Tuesday, Hall County Sheriff’s officials announced that Stacey Schoeck, 38, conspired with 30-year-old Lynitra M. Ross and 36-year-old Reginald Coleman to commit the murder. They declined to give details or say whether they suspected it was a case of murder for hire.

“All had individual roles in the death,” Hall County Sheriff’s Col. Jeff Strickland said.

Ross and Stacey Schoeck worked together at the Georgia Spine and Neurosurgery Center in Decatur, where Schoeck was an administrator and Ross was an office manager, according to the clinic’s website.

Coleman ran a gym in Austell and advertised himself as “Mr. Results,” according to his website. In arrest warrants, Coleman is accused of shooting Richard Schoeck repeatedly, while Stacey Schoeck and Ross are charged as parties to the crime of murder.

Strickland said Coleman was arrested by Cobb County police at his Austell home about 7:30 a.m. Tuesday.

Ross was arrested at an Austell apartment complex at about 9:15 a.m. Stacey Schoeck was arrested at her job in Decatur at about 1:15 p.m.

All three are being held without bond at the Hall County jail.

Reached Tuesday, Richard Schoeck’s sister said the arrests were not unexpected.

“I’m not surprised,” said Carol Fillingim of Cumming. “I knew they were having marital problems.”

Richard Schoeck had been married to Stacey Schoeck for less than three years when he was gunned down outside his Ford F-250 pickup truck at the small park on the banks of the Chattahoochee River.

The couple had been involved in scouting with Stacey Schoeck’s three children from previous relationships and ran a scouting camp last summer.

Richard Schoeck worked as a facilities manager at a Gwinnett County medical building. An Auburn University graduate and former graphic artist, he was widely liked by friends and co-workers, who left dozens of condolences on his online obituary guestbook.

His sister said in the months since the shooting, she’s had one question for whoever killed her brother.

What I wanted answered was, "what did Richard ever do to you?” Fillingim said.