PHILADELPHIA (CBS) — Police are investigating the murder of a pediatrician whose body was found tied up and set on fire inside her Center City home Monday.

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Authorities say firefighters responded at 12:30 p.m. to a report of a fire at home in the 1700 block of Naudain Street.

When firefighters entered the home, they discovered the bound body of female in her 30s on fire in the basement. Investigators say the victim had her hands and feet duct-taped behind her and she was also strangled.

According to CBS 3 reporter Walt Hunter, the victim was fully clothed. Investigators said that there were no immediate signs that the victim was sexually assaulted.

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Investigators say a man who was hired by the victim to walk her dog was the first to discover the body.

Police tell Eyewitness News that there were no signs of forced entry and they are investigating the possibility that the victim may have been followed.

The woman’s identity has not been released. Friends and neighbors told Eyewitness News that the victim worked at Children’s Hospital of Philadelphia.

The motive remains under investigation by Philadelphia police homicide detectives.

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Anyone with information is urged to call 911.