Travis Decker was clearly on “the brink of something really extreme” in the weeks before he allegedly slaughtered his three little girls , new court documents show.

The still-on-the-loose homeless veteran’s escalating behavior became so concerning that his ex-wife — who has since said Decker is more a “broken’’ man than a cold-blooded killer — hurriedly filed a protection order petition against the accused killer.

“He had seemed better, then it seemed like things just started happening one after another,” Whitney Decker wrote in the documents, obtained by KXLY.com. 3

The cracks in Decker’s psyche were reportedly showing at his workplace, where he faced bullying and isolation from his colleagues.

His supervisor became so concerned with Decker’s mental state, he called Whitney

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