NEWTOWN - A recording has surfaced that allegedly features the voice of the Newtown gunman talking about another violent attack a year before the mass shooting at Sandy Hook Elementary School.

In 2011, Adam Lanza reportedly called a radio station in Oregon to talk about Travis the chimp, who attacked and nearly a killed a woman in Stamford in 2009. Police haven't confirmed it's Lanza talking, but the Daily News says former classmates have confirmed he's the caller.

The caller seems to symapthize with the animal, blaming civilization for turning him violent. "I just don't think it would be such a stretch to say he could have been a teenage mall shooter or something like that."

Fairfield Police Chief Gary MacNamara says he understands if some people find the call chilling, but hopes it can provide some valuable information.

For the full audio of Lanza’s alleged phone call, click the video to the left or watch 12 Extra on Channel 612.