Lawyer suspected of killing Judge Esther Salas' son possibly targeting enemies following cancer...

The lawyer that shot and killed the son of a federal judge may have been hunting down his enemies after learning he'd been diagnosed with cancer.

Law enforcement officials believe Roy Den Hollander — a "men's rights" attorney that once sued bars and nightclubs for offering "ladies' nights" on the grounds that it violated the 14th Amendment — was responsible for shooting federal Judge Esther Salas' husband and son after breaking into their home.

Ms Salas' son was killed in the shooting.

Investigators are now exploring a possible link between threats and attacks on other lawyers to Den Hollander, according to the New York Post.