Gov. Gavin Newsom of California said on Monday that he would not make a decision on granting clemency to Lyle and Erik Menendez, who killed their parents in their Beverly Hills home in 1989, until after the incoming district attorney in Los Angeles County conducted his own review of the case.

The current district attorney, George Gascón, asked a judge in October to resentence the brothers, who were convicted of first-degree murder and sentenced to life in prison without parole. Around the same time, the brothers petitioned the governor for clemency, and Mr. Gascón wrote a letter in support of the request.

But Mr. Gascón lost his re-election bid this month to Nathan Hochman, a former federal prosecutor who vowed to be tougher on crime, and the change in leadership has cast some doubt on whether the resentencing bid will move forward.

“The governor respects the role of the district attorney in ensuring justice is served and recognizes that voters have entrusted District Attorney-elect Hochman to carry out this responsibility,” Mr. Newsom’s office said in a statement on Monday. “The governor will defer to the D.A.-elect’s review and analysis of the Menendez case prior to making any clemency decisions.”

Mr. Hochman has said publicly that he will conduct his own review of the case after he is sworn into office on Dec. 3, and that he may ask the Los Angeles Superior Court judge overseeing the resentencing petition to delay a hearing scheduled for Dec. 11.

“Once I take office on Dec. 3, I look forward to putting in the hard work to thoroughly review the facts and law of the Menendez case, including reviewing the confidential prison files, the transcripts of the two trials and the voluminous exhibits, as well as speaking with the prosecutors, defense attorneys and victim family members,” Mr. Hochman said in a statement on Monday.

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