A Pennsylvania woman and her daughter are accused of being the first ever mother and daughter serial killers. The women were charged yesterday with murdering 5 members of their family, including three children. 

The two alleged serial killer are Shana Decree, 45, and her daughter Dominique Decree, 19.

Police outside of Philadelphia charged the mother and daughter with 5 counts of homicide and one count each of conspiracy. Police claim to have found all five bodies hidden inside a home in a the suburb of Morrisville, right outside of Pennsylvania.

In separate interviews with police, the women said they and Shana Decree's sister choked the others to death before Dominique Decree fatally choked the sister, the affidavit says. Dominique Decree's neck had visible injuries, police observed.

"Shana advised that all, including the children, were talking about suicide," the affidavit says.

The women both have been charged with five counts of homicide and one count of conspiracy, the Bucks County District Attorney's Office said.

The pair is accused of killing Shana Decree's children, Naa'Irah Smith, 25, and Damon Decree Jr., 13, as well as Shana Decree's sister, Jamilla Campbell, 42, and Campbell's 9-year-old twin daughters, Imani and Erika Allen, the prosecutor said.

Dominique is pleading innocent. When interviewed by police the teenager told police that "everyone at the apartment wanted to die" by committing suicide. She refused to give specifics on the deaths.

The murder victims are identified as Shana's two children other Naa'ilrah Smith, 25, Damon Decree Jr., 13, their aunt Jamilla Campbell, 42, and Jamilla's twin daughters Imani and Erika Allen, aged 9.

Dominique gave an extraordinary story to police, telling them that Jamilla killed her babies, then committed suicide.

Right now police do not believe Dominique's "suicide" story.