In a major breakthrough Monday, Indiana State Police announced the arrest of Richard Allen for the 2017 double slaying of teens Liberty "Libby" German and her best friend, Abigail "Abby" Williams.
Allen, 50, who worked as a pharmacy technician at CVS in Delphi, a town of about 3,000 people, has been charged with two counts of murder.
"We haven't closed the door on the investigation," Carroll County Prosecutor Nicholas McLeland said when asked if other suspects were being probed. "We're not presuming anything at this point."
Officials did not disclose key details, including how the girls were killed or the evidence they've obtained so far. Here's a timeline of the case.
DELPHI MURDERS: SUSPECT ARRESTED FOR THE 2017 SLAYINGS OF TWO TEENS
German's sister dropped off the girls at the entrance to the Delphi hiking trial near the Monon High Bridge at 1 p.m during a day off from school.
The teens didn't show up at a predetermined meeting spot and their families reported them missing at 5:30 p.m., according to police.
A search team found German, 14, and Williams, 13, dead in a wooded area half a mile from the Monon High Bridge, which is about 70 miles northwest of Indianapolis.
Investigators released a pair of grainy photos of a suspect walking on the abandoned railroad bridge and an audio recording of the man ordering the girls "down the hill."
DELPHI MURDERS: INDIANA MAN REPORTEDLY IN CUSTODY IN CONNECTION WITH 2017 KILLINGS OF 2 GIRLS
The images and recording came from German's cellphone, officials said.
State Police and the FBI executed a series of search warrants in connection to social media accounts under the name "anthony_shots."
The fictitious account was used by Kegan Kline, 27, to communicate with young girls, including German. It was later revealed that Kline had chatted with German the night before she vanished.
Authorities executed a search warrant on Ron Logan's property, where the teens were found. He is not a suspect in the murder, according to FOX 59.
Five months after the killings, police released a sketch of the suspect based on witness tips.
An updated sketch depicted a much younger male suspect. State police announced that the case had "shifted in a new direction" and described the suspect as between the ages of 18 and 40.
WATCH THE DELPHI MURDERS ON FOX NATION
Police also released for the first time video of the suspect walking on the railroad bridge recovered from German's phone.
Kline is charged with 30 felonies stemming from alleged possession of child porn.
The Carroll County Sheriff's Office says it is probing James Brian Chadwell after he was charged with an attack on a 9-year-old girl.
A transcript of a 2020 police interview with Kline is obtained by the podcast "Murder Sheet."
Kline allegedly admitted to communicating with German, and police say he had planned to meet her at the bridge the day she was murdered, which he denied.
The transcript also revealed that he had searched "How long does DNA last" on his computer and failed a polygraph test.
Kelsi German told WTHR on the anniversary of the murders that she still believes her slain sister, Libby German, will get justice.
"When I’m feeling frustrated, when I feel like no answers are coming and I’m feeling dejected, I say that. I say, ‘Today is the day. It’s coming and it’ll get here. We’re going to have answers’ and just reaffirm myself and say, ‘It’s hard, it’s frustrating, it’s been five years, but we’re going to have answers eventually. It’s coming.'"
Kelsi German's prayers were answered when state police announced the arrest of Allen at a press conference Monday.
"We got him," she wrote on Twitter. Police said the investigation is still ongoing and did not say whether Kline remains a suspect.
If you have information on the Delphi murders, please contact authorities at abbyandlibbytip@cacoshrf.com or call 844-459-5786, 800-382-7537 or 765-564-2413.
The Associated Press contributed to this report.
