The son of U.S. District Judge Esther Salas was killed Sunday and her husband was in critical condition after they were shot at their home in New Jersey, senior law enforcement officials told NBC New York.

The shooting occurred in North Brunswick Township early in the evening, the FBI said in a statement, adding that it was searching for one suspect.

U.S. Chief District Judge Freda Wolfson identified their son as Daniel, the Associated Press reported.

Salas, a former federal public defender who was nominated by President Barack Obama in January 2011 and confirmed that June, is a judge in U.S. District Court in Newark.

In a statement Sunday, Sen. Bob Menendez, D-N.J., said that he knows Salas and her husband well and that he was proud to have recommended her nomination to Obama.

"My prayers are with Judge Salas and her family, and that those responsible for this horrendous act are swiftly apprehended and brought to justice," he said.

New Jersey Gov. Phil Murphy said the shooting should serve as a reminder that gun violence is still a crisis and "that our work to make every community safer isn’t done."

Salas presided over the trial of former "Real Housewives of New Jersey" star Teresa Giudice and other high-profile cases.

More recently, Salas was appointed to preside over a lawsuit brought by Deutsche Bank investors, the Associated Press reported. The plaintiffs claim the company made false and misleading statements about its anti-money laundering policies and didn't monitor accused child sex trafficker Jeffrey Epstein.

Earlier this month, New York regulators fined the bank $150 million for its "significant compliance failures."