The alleged killer of the son of a New Jersey federal judge may also have been involved in the shooting death of a men's rights attorney in California earlier this month, news reports said Wednesday.
Attorney Marc Angelucci was killed July 11 in San Bernardino County. Just over a week later, a man dressed as a FedEx driver showed up at the home of U.S. District Judge Esther Salas, shot and killed her son, 20, and wounded Salas' husband, who survived.
Authorities said they have evidence linking the alleged perpetrator in the New Jersey shooting, Roy Den Hollander, with Angelucci's killing as well, according to The Associated Press. A law enforcement official told the AP that the suspect in Angelucci's killings was also dressed as a delivery driver.
ABC News reported law enforcement sources said the same gun was used in both killings.
Hollander, 72, a self-proclaimed "anti-feminist" attorney, was known for filing lawsuits challenging the constitutionality of ladies' nights at bars. He also sued Columbia University for offering women's studies classes.
Angelucci was also a men's rights activist. Like Hollander, Angelucci had filed cases challenging the male-only military draft. Angelucci's friends said Hollander saw the California lawyer as a rival.
Hollander was "beyond words furious, absolutely enraged" that Angelucci was getting involved in the Selective Service case, his friend Paul Elam said in a Facebook Live video Monday, CNN reported. "He saw Marc's work in that respect as an intrusion into his space. He was more than angry about it; he was livid."
Like Angelucci, Hollander had been a member of the National Coalition for Men, a men's rights advocacy group. But Hollander was kicked out of the group after he threatened the group's leadership, the coalition's president, Harry Crouch, told CNN.
Hollander was found dead Monday.