The shooting deaths of a married couple at a Fountain Hills home is connected to a killing spree in which a man identified as Dwight Jones murdered four other people, Scottsdale police said.

[RELATED: Burglars hit home of murdered Fountain Hills couple]

Maricopa Sheriff's investigators scoured a home in the area of Kit Fox Place in Fountain Hills, where the bodies of a husband and wife were found early Monday. They were later identified as 70-year-old Mary Simmons and 72-year-old Bryon Thomas.

That brings the total number of victims to six.

"They came here about 20 minutes to 12, I was ready to retire for sleep and my wife said, 'Something's happening,'" said neighbor Thomas Kositis, who said deputies then knocked on their door.

"They asked for the phone number of our neighbor next door, which she gave them, and then, of course, I was up, and she was upset and couldn’t sleep," Kositis said.

Deputies said they weren't getting an answer at the home of the husband and wife just before 12:30 a.m. on Monday so they used a ladder to look into a window. That's when they discovered the couple shot to death.

Police said they were conducting surveillance on Jones and he was seen driving in the area, and later seen dumping a .22-caliber gun stolen from the Fountain Hills home of Simmons and Thomas.

Police say Jones and the victims, Simmons and Thomas, had a "social/recreational relationship. " Simmons and Jones met 4 to 5 years ago through tennis and would occasionally meet to play at local parks.

Neighbor Kositis, who says he has known the couple for 15 years, was very emotional.

"They were good people," he said.

Police said Jones shot and killed himself inside his room at an Extended Stay America in Scottsdale as officers closed in on him early Monday morning.

[RELATED: PD: Suspect in multiple murders in Phoenix, Scottsdale committed suicide]

[SLIDESHOW: Murder spree ends with suspect's suicide at Scottsdale hotel]

First four victims

Thursday, May 31 - Dr. Steve Pitt

Friday, June 1 - Laura Anderson and Veleria Sharp

Saturday, June 2 - Dr. Marshall Levine

[TIMELINE: 72-hour killing spree | MAP: Crime scenes]

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