SCOTTBLUFF, Neb. (AP) — Scottsbluff police have been joined by a Philadelphia-based crime-solving organization to find out who killed a 40-year-old Nebraska man nearly 6½ years ago.

Chief Kevin Spencer presented the cold case of Jason Vesper to The Vidocq (vee-DAWK’) Society. Vesper was found mortally stabbed on Jan. 2, 2008, a few houses away from his home. There have been no arrests in the case.

The society meets each month to discuss crimes, focusing on unsolved deaths and disappearances. It’s been credited with helping solve crimes or reinvigorating old, cold cases. Members include a profiler, FBI agents, experts in forensics and other experts.

Spencer says members gave him some “sage advice,” and his investigators have been following up on it. He says he believes the case is solvable.