ressed  women began pounding on the door of the home on Perry Road after gunshots went off inside, according to video and audio evidence gathered by investigators.

The gunman then stepped outside to shoot them both before going back inside and killing himself, cops said.

Both families are asking for donations to cover funeral expenses and support the respective relatives who are reeling from the shocking murders.

Among the other victims gunned down is Angelina Stone, the killer's pregnant daughter who was just days away from giving birth to her third child to be named Kyrie.

6 Also among those killed in the brutal mass killing is Angelina Stone, the killer's pregnant daughter who was just days away from giving birth to her third child Kyrie. WJET via AP

Stone's two other children, Isiah, 5, and Amari'anna, nearly 2, were also killed.

Authorities have yet to identify other victims of the attack, saying that they are in the process of notifying the victims' next of kin. However, police said all nine victims - except for a family friend, believed to be Tanner - were relatives.

Cops have also not yet revealed a motive for the violence, though Erie Police Chief Rick Lorah said that he believes  mental health is at play here.