UNDATED (AP) -- The lone survivor of a mass slaying in Crandon is speaking publicly for the first time about the horrific event.

Charlie Neitzel tells the Milwaukee Journal Sentinel the gunman, Tyler Peterson, was a "crazy psycho" and a "cold blooded murderer."

Neitzel says he survived his three gunshots by playing dead.

Neitzel was the last person Peterson shot during his October 7 rampage.

Peterson shot the seven at a party in Crandon after arguing with his ex-girlfriend, 18-year-old Jordanne Murray.

She was among those killed.

Peterson later fatally shot himself as law enforcement agents closed in.

Neitzel says he tries not to think about the fatal shooting of his six friends.

He says he's talked to the victims' families, who wanted to know if their kids suffered.

He says all but one died right away.