(CNN)Authorities have arrested and charged Bryan Anthony Rhoden in the July 3 triple homicide at the Pinetree Country Club, in which golf pro Gene Siller was killed, Cobb County Police Chief Tim Cox said in an evening press conference on Thursday.
Suspect arrested and charged in killing of golf pro Gene Siller and two others
He has been charged with three counts of murder, three counts of aggravated assault and two counts of kidnapping, the chief added. Cox said Rhoden was the lone shooter in the killings.
Rhoden was arrested in the Chamblee, Georgia, area and "has ties to the metro Atlanta area," Cox said.
"We literally had detectives that have worked around the clock and some have literally slept in their offices since July 3 trying to clear this case," he added.
Rhoden's name came up "within a few days" since the start of the investigation, the chief said.
Investigators are now exploring the relationship between Rhoden and his victims, the chief said, adding "we definitely feel confident there was no relationship between the shooter and Mr. Siller."
This remains an active investigation, the chief said.
Police previously said they were called to a report of a person shot on Saturday afternoon and found Siller -- who was the club's director of golf -- shot in the head near the green of the course's 10th hole.
A truck was on the green, and officers found the bodies of the two other men in the truck's bed -- both of whom also had been shot, police said. One of the slain men was Paul Pierson, 76, of Kansas -- the registered owner of the Ram 3500, police said.
Police identified the third victim as Henry Valdez, 46, of California, and said he and Pierson appeared "to have no relation to the location at all."
Someone had driven to the green in the truck -- a white Ram 3500 pickup -- and shot Siller when Siller arrived to see what was going on, a member of the club told CNN affiliate WXIA. The shooter then fled, WXIA reported.
On Tuesday, police said they believed Siller was killed "because he witnessed an active crime taking place."
"It does not appear he (Siller) was targeted," but instead was killed because he "happened upon a crime in progress involving the unknown suspect and the two deceased males," the Cobb County police said in a news release.
The Georgia State Golf Association expressed its condolences for Siller's death. "All of us at the GSGA are deeply saddened by the tragic events that occurred earlier today at Pinetree CC. Our thoughts and prayers are with Gene Siller's family and friends," the association tweeted on July 3.
Siller, 46, leaves behind a wife and two children, ages 6 and 7, according to the Pinetree Country Club.
He was "a man of compassion" who "loved everybody," Rand Eberhard, a pastor who lives in a neighborhood near the country club and knew Siller, said earlier this week.
"It's a big void that is left in our community to lose such an important guy," Eberhard added.
Funeral services for Siller will take place on Monday, according to an email from his golf club, which announced they will also hold a celebration of life Monday evening.