Federal authorities continue to investigate the death of a federal judge's son and shooting of her husband at their home in New Jersey.

Neighbors say shooting suspect Roy Den Hollander grew up vacationing at his family's home on Ragin Road in Roscoe - where authorities say the suspect went to take his own life on Monday.

Authorities say the 72-year-old suspect in the New Jersey attack against U.S. Justice Ester Salas' family was found fatally shot alongside the road in the Catskills, where neighbors say the self-proclaimed anti-feminist attorney had strong ties.

Authorities believe Den Hollander, who reportedly had terminal cancer, may also be responsible for the fatal shooting of another attorney in California.

They are now looking into whether or not he had a hit list in his car, which according to Gov. Andrew Cuomo, named top New York Judge Janet DiFiore.

Den Hollander had a long history of filing lawsuits against programs believed to favor women and was the former attorney in a lawsuit before Judge Salas, challenging the military's male-only draft.

Den Hollander publicly criticized Salas' handling of that case.

Authorities are now continuing to trace Den Hollander's steps up until his final moments here and have yet to release a possible motive behind the shootings.