Colquitt County Sheriff's Office Lt. Sean Bostick, left, examines the contents of a pickup truck Friday afternoon as an agent with the Georgia Bureau of Investigation takes photos. The truck was parked in the yard of the mobile home where Sylvester Ricky Hill, 58, was found dead on Friday morning.

MOULTRIE, Ga. — In many cold cases, evidence will point strongly to a certain person, but there’s just not quite enough proof to arrest and charge. So the resolution of the case stays just beyond the grasp of investigators.

In Colquitt County, several cases, one dating more than three decades, remain unsolved.

But investigators say they are still beating the bushes looking for more information.

“In quite a few of these cases, we have people that we believe are responsible, but there is not enough to bring criminal charges at this point,” said Jamy Steinberg, special agent in charge of the GBI’s Thomasville office.

“We consult with the District Attorney’s Office when we receive information and discuss the viability of prosecution in each case individually.”

The most recent unsolved slayings are those of Anthony Tyshaun Keith and Willie “Chill” Bender Jr., both of which occurred in the city of Moultrie, and the fatal shooting of Sylvester Ricky Hill, which is being investigated by the Colquitt County Sheriff’s Office.

Keith, 27, was fatally shot on the night of March 29, 2012, at an apartment complex in southwest Moultrie. He made his way to the nearby Woodmen of the World Park, where he collapsed.

The 29-year-old Bender’s death came a little more than two years earlier. His body, which had been stripped of his shorts and shoes, was found in front of his 504 Fourth St. S.W. residence.

Bender’s girlfriend reported hearing gunshots on April 14, 2010, and when police responded at 5:56 a.m., they found Bender, shot multiple times.

As the two-year anniversary of Hill’s slaying approaches, investigators are hoping to make progress on finding the 58-year-old man’s killer.

A neighbor discovered Hill’s body inside his mobile home in the 100 block of Arrowhead Lane on the morning of June 26, 2015, after noticing his truck was parked there at a time when Hill normally would have been at work.

Hill was killed by a gunshot to the chest. Investigators know the night before his death he had attended a party where he played cards.

Some time after arriving home, someone went inside the residence and shot Hill in his hallway, sheriff’s Sgt. Chris Robinson said.

There was no sign of forced entry and the motive remains unknown.

Several people have been interviewed — including everyone at the card game — but there’s never been enough information to pinpoint a suspect, Robinson said.

Robinson believes that someone out there knows who killed Hill.

“We’d like to give Mr. Hill’s family some relief, knowing the case is still open, and we hope one day to make an arrest,” Robinson said. “Somebody knows something or saw something. We just hope they come forward and will either contact us or contact the GBI.”

Investigations into Bender and Keith’s deaths are still active, Steinberg said, as is that of Throdger Johnson, who was found shot to death 15 years ago in the north end of Colquitt County near the Worth County line.

On Halloween night 1983, businessman Joey Miller’s body was found in the trunk of his car. No arrests have ever been made.

The decomposed remains of a young woman found more than 20 years ago in northwest Moultrie have never been identified.

Steinberg is sure there are people out there with information crucial to these cases.

For a loved one, not knowing the circumstances or reason for a relative’s death is difficult, said Wilma Hadley, who is Willie Bender Jr.’s aunt.

The night Bender was killed his shorts had been removed — and were never found — and his shoes were off and near his body, said Hadley, who is deputy assistant clerk in the Criminal Division of the Colquitt County Clerk of Court’s Office and a Moultrie City Council member.

“Seven years since the death, or murder, of Willie “Chill” Bender Jr., no arrests, no suspects,” she said. “But we’re still hoping that someone with information about the murder will come forward and alert the authorities.”

Bender left behind five children. Although he was not an angel and had his own brushes with the law, “He was still somebody’s child,” Hadley said.

The arrest and conviction of Bender’s killer would bring the family closure and perhaps knowledge about the motive.

“It won’t bring him back but it will close the case,” Hadley said.