Five years after her father’s plane crashed into the Pentagon in the Sept. 11 terrorist attacks, a woman was found dead yesterday in a fire at the Galaxy Towers apartment complex in Guttenberg, N.J.

The woman, Wendy Burlingame, 32, was discovered by firefighters in a short hallway between the kitchen and the bedroom of her 10th-floor apartment where the four-alarm fire began, said Edward DeFazio, the Hudson County prosecutor. Mr. DeFazio said the fire, which law enforcement officials are calling suspicious, began shortly after midnight in the apartment Ms. Burlingame shared with her companion and was still under investigation, as was the cause of Ms. Burlingame’s death. No one else was injured in the fire, Mr. DeFazio said.

Ms. Burlingame was the daughter of Charles F. Burlingame III, a 25-year Navy veteran who was the captain of American Airlines Flight 77, which slammed into the Pentagon on Sept. 11., 2001, killing 189 people.

Mr. DeFazio said her companion of three years was among several people being interviewed in connection with her death. He would not identify the companion, but tenants in the complex identified him as Kevin Roderick.