PARADISE VALLEY, AZ - The Paradise Valley Police Department has confirmed the identities of two people found dead inside a burning home Monday.
Paradise Valley police Commander Alan Laitsch said the Maricopa County Medical Examiner's Office positively identified Lawrence Shapiro, 79, and his wife, Glenna, 78, through the use of dental records.
Sources involved in the investigation confirm to ABC15's Christopher Sign that they are making progress in the case and have developed credible leads.
Police Chief John Bennett said during a Wednesday news conference the bodies discovered inside the home Monday, near 40th Street and Stanford Drive, were bound and burned beyond recognition.
"The crime scene investigation revealed that both victims were found in the master bedroom and had been bound. The motive for this crime has not been determined," Bennett said.
Police said they do not know whether the couple were killed by the blaze or had been killed before the fire.
"This is going to be a prolonged, complex investigation. It's going to take probably quite a bit of time," Bennett said.
Police responded to the Paradise Valley home after a car belonging to the couple was found burning behind the Goodwill store near 7th Street and Union Hills.
Through various sources, ABC15 confirmed detectives are analyzing several surveillance cameras in the area.
At this point, those involved in the investigation do not know how many suspects were involved in the crime and are checking the couple's credit card activity, which may have been used after the Shapiros were killed.
The Secret Service is also said to be on this case. Paradise Valley police said this is routine.
They told ABC15 they've reached out to many outside agencies for help in this investigation.
ABC15 talked to several sources familiar with cases like this, including a former Secret Service agent, who told us, this is not normal.
They said the Secret Service tends to investigate financial, electronic or identity theft cases, but this is a homicide case.
Paradise Valley police are also working with the Maricopa County Sheriff's Office, and the ATF on this case.
Lawrence Shapiro, a well known philanthropist, had a career as a doctor in the Valley for more than 45 years. Glenna has been the CEO of the National Kidney Foundation of Arizona.