Detectives & Fire Marshal back at Suspicious fatal fire in 2100 blk W Susquehanna. pregnant woman died. @6abc pic.twitter.com/LcGAhqu4m1 — Annie McCormick (@6abcAnnie) May 21, 2017

EMBED >More News Videos Pregnant woman found dead in North Philadelphia fire. Annie McCormick reports during Action News at 6 on May 21, 2017.

EMBED >More News Videos Pregnant woman found dead in North Philadelphia fire. Annie McCormick reports during Action News at 11 p.m. on May 21, 2017.

NORTH PHILADELPHIA (WPVI) -- Police kept watch Monday morning over a home in the 2100 block of West Susquehanna Avenue in North Philadelphia.They were guarding the scene of what authorities are calling a suspicious fire.It broke out before 7:30 a.m. Sunday."I came to the door, and my son told me there were flames coming out," said neighbor Rochelle Acosta.Inside, on the second floor, police found the body of a 35-year-old woman who was five months pregnant."I just think it's sad," said Cynthia of North Philadelphia, "because someone lost their daughter, their sister and a baby.Police have stopped short of ruling the blaze an arson pending further investigation and an autopsy.Neighbors are stunned that arson is not being ruled out."That's just crazy," said Rasheed Napper, "because I don't see why somebody would want to kill a pregnant person and a baby.""I walk past here every day with my son going to school," said another resident. "It is kind of weird to realize a fire happened over here and somebody possibly set it to kill that person."The woman was visiting her boyfriend from out of town.Police are withholding her name until family members are notified.----------