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RESTON, Va. (WUSA9) -- Fairfax County Police have identified the victim of a fatal apartment fire as 38-year-old Jennifer Lynne Pearson. She was pregnant, police said.

The fire marshal's office and the police department are working together to investigate the apparent homicide after Pearson was found dead at the scene of the fire on Monday morning, police said.

Firefighters responded to the three-story building in the 12000 block of Waterside View Drive in Reston at approximately 6:15 a.m. Monday after reports of smoke.

Police say firefighters determined the smoke was coming from a second-floor apartment and forced entry into the apartment, where the mother-to-be dead inside the apartment.

It was later determined that the woman suffered from trauma to her upper body, police said.

The investigation is in its early stages but authorities say they are treating the death as a homicide, police said.

There wasa report that someone heard arguing in an apartment earlier in the morning.

If you have any information about this case call Crime Solvers at1-866-411-TIPS/8477.