Silent Witness is asking for information to solve a cold case double murder from last year in Phoenix.
According to Phoenix police, 81-year-old William Singer and 64-year-old Barbara Singer were found dead in their home near 35th Avenue and Bell Road on July 2, 2014.
In August 2014, police released composite sketches of two persons of interest who were in the area prior to their deaths.
But in a statement posted Tuesday, police said there is no known information on suspects.
Anyone with information on this double murder is urged to call 480-WITNESS or toll-free at 1-800-343-TIPS.
You can also leave an anonymous tip on SilentWitness.org.