PHOENIX - Court documents are providing new information in the case of a murder suspect who Scottsdale Police say was described as "manipulative and charismatic."

The backstory:

In recent days, we have reported on the case involving Matthew Stephen Dieringer.

Dieringer, 35, was named as a suspect in the murder of 67-year-old Frank Quaranta on Sept. 4. Investigators first became aware of what happened when they responded to the victim's home near 68th Street and McDowell Road around 1:30 p.m. on Sept. 1 for a welfare check. The welfare check call was made to police after Quaranta didn't show up for work.

"Responding officers were unable to contact the victim any other way and forced entry inside the residence to check on Quaranta. Tragically, Quaranta was found deceased inside,"

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