Updated

Police are looking for leads in the murder of a 35-year-old pediatrician whose body was found bound and burned inside her downtown Philadelphia home.

Firefighters responding to the home Monday afternoon found Melissa Ketunuti's body on fire in the basement, with her ankles and wrists bound. The body was found with a rope around the neck and police believe she was strangled.

A $20,000 reward is being offered in the case.

Homicide Capt. James Clark says police don't know if she knew her killer, but that there were no signs of forced entry at the home. Clark says her boyfriend has been ruled out as a suspect and she had no known disputes with anyone.

Ketunuti was a second-year infectious diseases fellow and researcher at Children's Hospital of Philadelphia.