The gunman who shot dead two firefighters in upstate New York, left a note saying “Killing is what I do best.”
In the note William Spengler, 62, also said he wanted to burn down his neighbourhood, and kill as many people as possible.
The charred remains of a woman were found in the burned out house, she is believed to be his sister.
Spengler used a Bushmaster semi-automatic rifle, the same used by Adam Lanza in the Sandy Hook Elementary school massacre.
Spengler, convicted of the manslaughter of his grandmother in 1981, was found dead of a self-inflicted gun shot wound hours after the killing of the fire fighters.