Roy Den Hollander: FBI links suspected shooter of judge's son to murder of rival men's rights lawyer

The anti-feminist lawyer suspected of killing the son of a federal judge is being investigated for the murder of a rival men's rights activist.

The FBI confirmed on Wednesday that Roy Den Hollander, who was found dead on Monday, was being probed in connection with the murder of Marc Angelucci about a week before he targeted the home of Judge Esther Salas.

In comes as the online writings of Mr Hollander, 72, suggest he may have been hunting down enemies after receiving a cancer diagnosis, with authorities finding documents pointing to Mr Angelucci and another judge near where his body was found in New York's Catskills.

In an online manifesto against cancer doctors, Mr Hollander blamed the "lazy and incompetent Latina" appointed by Barack Obama for denying him a legal victory by taking too long in his case against the male-only military draft. That victory that was reportedly handed to Mr Angelucci.

"All of this was a nice stressful addition since it occurred in the middle of preparing for oral argument in a federal case before a lazy and incompetent Latina judge appointed by Obama," he wrote.

Saying nothing in life matters anymore with death's hand on his left shoulder, Mr Hollander also wrote: "The only problem with a life lived too long under Feminazi rule is that a man ends up with so many enemies he can't even the score with all of them."

Quoting law enforcement source, papers mentioning Mr Angelucci were found near Mr Hollander's body on Monday, according to The Daily Beast, which has been the first to report the suspect's identity and connections to the victims.

The FBI also contacted New York Chief Judge Janet DiFore to report her name and photo were also found in the dead suspect's car, according to The New York Times.

In a tweet on Wednesday, the FBI confirmed it has evidence linking Mr Hollander to the 11 July murder of Mr Angelucci, and was now working with the Sheriff's Office to investigate the homicide.

Mr Angelucci, a 52-year-old vice president of the National Coalition for Men, was found dead from a gunshot wound at his Cedarpines Park home, according to the county sheriff's department.

The suspect was believed to be wearing a FedEx uniform in the same manner as the suspect who killed Ms Salas's son, Daniel Anderl, 20, and critically injured her husband, Mark Anderl.

The National Coalition for Men president and Mr Angelucci's long-time friend, Harry Crouch, told CBS Los Angeles he immediately saw the link with the attack on Ms Salas's family and described Mr Hollander as a "nut job" who was kicked off the coalition's board after threatening members.

"I immediately saw a link," Mr Crouch said. "But I want to be real clear, he's not a NCFM member. Why isn't he? Because I threw him out five or six years ago, because he was a nut job."