Gilgo Beach serial killer Rex Heuermann is getting fan mail from other notorious psychos while he cools his heels in the Suffolk County lockup — including one high-profile maniac, The Post has learned.
Heuermann, 62, who pleaded guilty Wednesday to strangling eight sex workers to death over the past three decades, has no friends while living in “voluntary isolation” at the county jail — but has his share of infamous pen pals including one notorious killer “out in the west,” Suffolk County Sheriff Errol Toulon said.
“He was receiving letters from other incarcerated individuals throughout the country — almost like a pen pal,” Toulon said. “We’re not allowed to read these letters, but we can see on the incoming correspondence, on the envelope.”
Toulon wouldn’t say who those creepy pen pals were, but a report by the Daily Mail this week said one is “Happy Face Killer” Keith Jesperson, who is locked up for killing eight women between 1990 and 1995.
Jesperson said he advised Heuermann “not to go to trial” following the hulking architect’s 2023 bust, and urged him not to waste time going through a high-profile trial, the outlet said.
“He was done,” Jesperson told the Mail. “[I told him] that his best way forward was to make a deal to plead guilty in exchange for a better place to do his life — what life he has left.”
Jesperson has meddled in other high-profile murder cases, including trying to get University of Idaho killer Bryan Kohberger to bunk with him at the Oregon State Penitentiary for his own safety.
Last year, he wrote podcaster and former prison minister Keith Rovere that Kohberger would be safer by his side, a bizarre screed later shared with Fox News.
“His best hope is to be transferred (sic) to here, the max prison in Oregon, to be away from those who want to make a name for themselves by killing him,” Jesperson wrote.
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Toulon wouldn’t say just how many letters Heuermann has gotten from other killers, but said the hulking 6-foot-4 former architect with a recent weight-related “oozing” foot problem is not getting any love letters while he waits to be sentenced to three life terms in June.
The Massapequa Park schlub is a loner behind bars, kept apart from other inmates and leaving only for court dates and solitary walks around the prison yard, the sheriff said.
“When Rex comes out of his cell all inmate movement in this entire facility ceases,” Toulon said. “He has religious services brought in, mental health brought to him. He does seek out the Catholic faith.”
He said Heuermann has also been putting on weight — likely from the jailhouse commissary and not from the regular fare served to inmates — and does little to lose his massive gut.
“He doesn’t do exercises on machines or play basketball,” Toulon added. “He does laps around the yard. It’s a big court area. About 30 times around is a mile.”
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