William, Barbara Singer double-murder: Police release 2 sketches of 'persons of interest'

NORTH PHOENIX - Phoenix police have released composite sketches of two "persons of interest" related to the double-murder of a husband and wife back in July.

Sgt. Tommy Thompson said the two males knocked on a neighbor's door days prior to the discovery of the couple and tried to gain access to the inside of the neighbor's home.

RELATED: New photos show Phoenix couple withdrawing money from ATM days before murder

Thompson said the two men claimed to be employees of a local cable company and were investigating a power outage in the area. The men told the neighbor they needed to reset the individual's cable box. However, the resident did not have cable service with this company, only Internet service, according to police.

Police describe the first person as a white male, 5 feet 7 inches tall, 160 pounds with short dark hair, light mustache and unshaven.

The second individual is described as a white or Hispanic male, 6 feet tall, 210 pounds, muscular with short dark hair.

William and Barbara Singer were found dead in their home July 2 near 35th Avenue and Bell Road. Authorities do not have anyone in custody in connection to the couple's murder.

Police said there does not appear to be any forced entry into the home and the door was locked when investigators arrived. Police were called to the home to conduct a welfare check by a caregiver.

RELATED: Couple's son: "It doesn't make any sense. They would have helped anyone."

The couple's son spoke to ABC15 on July 9 and said, "It doesn't make any sense. They would have helped anyone" in reference to his parents' deaths.

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