(Morrisville, PA) -- A Pennsylvania woman and her teenage daughter are accused of murdering five members of their family, including nine-year-old twin girls. Their bodies were found last night at an apartment complex in Morrisville, about a half-hour northeast of Philadelphia. The suspects are 45-year-old Shana Decree and her 19-year-old daughter Dominique. The dead are Shana Decree's 25- and 13-year-old children, her sister, and her sister's twins. There's no word on a cause of death or what may have led to the murders. Dominique Decree is expected to be arraigned on murder charges later today. Her mother was arraigned overnight.