Police investigating the mysterious Delphi, Indiana, murders are looking for the person who, they said, created fake Snapchat and Instagram profiles, posed as a wealthy male model and contacted underage girls.

       Delphi eighth-graders Abby Williams, 13, and Libby German, 14, were killed on Feb. 13, 2017 while walking on a local hiking trail. The girls had documented some of their walk on Snapchat. Years later, no arrests have been made.

       Courtesy Becky Patty

       An undated handout photo shows Libby German of Delphi, Ind., who was murdered in Feb. 2017.

       Anna Williams

       An undated handout photo shows Anna Williams with her daughter, Abby Williams, who was murdered in Delphi, Ind., in Feb. 2017.

       While investigating the double killing, authorities found a fake online profile called "anthony_shots," which used photos of a known male model and communicated with underage girls "to solicit nude images, obtain their addresses, and attempt to meet them," Indiana State Police said in a news release Monday.

       Anthony_shots "portrayed himself as being extremely wealthy and owning numerous sports cars," police said.

       MORE: Delphi murders 'might' be connected to nearby kidnapping case: Sheriff

       Authorities are now looking for information about the person who created the anthony_shots profile, which was used in 2016 and 2017 on Snapchat and Instagram, police said.

       The male model in the photos has been identified and isn't a person of interest, police said.

       MORE: 'Epitome of evil': Delphi double murder still a mystery 3 years later

       Police asked anyone who communicated with, met with or tried to meet the anthony_shots profile to contact law enforcement at abbyandlibbytip@cacoshrf.com or 765-822-3535. Indiana State Police spokesman Sgt. Jeremy Piers wouldn't say if Abby and Libby communicated with the fake profile.

       The Delphi case has been a mystery for years.

       Lindsey Jacobson/ABC News, FILE

       Photos of Abby Williams, left, and Libby German, right, at police headquarters in Adelphi, Indiana.

       Soon after Abby and Libby were killed, authorities released a grainy image of the suspect, who they say was on the hiking trail the day the girls went missing. State police in 2019 released video footage from Libby's phone; the brief video clip showed a grainy image of the suspect walking on the bridge near where the girls were last seen.

       Indiana State Police via AP, FILE

       This Feb. 13, 2017, file photo released by the Indiana State Police shows a man walking along the trail system in Delphi, Ind., authorities say is the suspect in the killings of two teenage girls.

       Police also publicized the suspect's voice -- a recording of him saying "down the hill" -- which was recovered from Libby's phone.

       Police in 2019 released a new suspect sketch that officials said was based on a witness' recollection of what he or she saw.

       Indiana State Police

       Indiana State Police released a new sketch of the suspect in the unsolved murders of two teen girls.