HALLANDALE BEACH, Fla. -

Friday marks one year since a Canadian couple was found slain inside their Hallandale Beach condominium.

Neighbors found the bodies of Toronto natives David Pichosky, 72, and Rochelle Wise, 66, inside their condo at the Venetian Park townhouse complex on Jan. 10, 2013.

The medical examiner ruled the two died of asphyxiation.

Investigators say the couple had attended a nearby Jewish temple and then went to a nearby Walmart on East Hallandale Beach Boulevard on Jan. 8.

They went home after visiting Walmart. On Jan. 9 about 8 a.m., they contacted a relative via Face Time.

Surveillance video captured a woman outside the couple’s condo that day. Police are working to identify her.

Police said that crime scene evidence shows that more than one person was involved in the murder.

Wise's wedding band is also missing. Her ring (pictured below) is described as about size 6 1/2 with a platinum finish and five half carat white diamonds on the top of the ring in a half-moon shape. The ring may be engraved with "DCC" inside the band and has a size-adjustable locking mechanism located at the base of the ring. It's valued at $16,000.

Hallandale Beach Police Chief Dwayne Flournoy is expected to hold a news conference Wednesday to discuss new developments in the case, Local 10 has learned.

A $51,000 reward is being offered for information leading to an arrest. Anyone with information is asked to call police at 954-457-1438 or Broward County Crime Stoppers at 954-493-TIPS.