Several longtime Jewish residents of the block where Grafton formerly lived told The Post they didn’t remember him as a neighbor.

Kim Thomas, a nurse, also disputed allegations by federal authorities that a swastika and references to Adolf Hitler and “Nazi Culture” found in her son’s journals were evidence of “anti-Semitic sentiments.”

Instead, she said, his writings are a symptom of his mental illnesses, which his lawyers have said include schizophrenia and bipolar disorder.

“He writes all over the paper, he circles letters or words like a typical schizophrenic mind,” she said.

Kim said her son was being held under suicide watch at the Orange County Jail, where she visited him Tuesday.

“I said, ‘Mommy loves you, I am going to try to do everything to help,’ and he said, ‘We thank you.’ I said, ‘Who’s we?’ ” Kim said. “To this day he has not received medical attention.”