Alan Dershowitz said that the indictments of 12 Russian intelligence officers related to interference in the 2016 presidential election make the case for impeachment against President Trump much weaker.

Deputy Attorney General Rod Rosenstein announced the indictments on Friday and said that there is no evidence that the alleged offenses had an effect on the outcome of the election.

Dershowitz said that the charges prove "any U.S. attorney's office" could have conducted the Mueller probe and could have come back with the charges.

"There's no need for a special counsel to do the kind of investigation that led to this indictment," Dershowitz, a Harvard Law professor emeritus, said on "Fox & Friends."

Rosenstein Announces Indictments of 12 Russians: 'We Will Not Try Cases on TV or in Congress'

Rosenstein on Friday said that entities linked to the Russian intelligence agency GRU engaged in "spearfishing" -- when victims are sent "misleading emails [that] trick users into disclosing passwords."

Rosenstein said other entities hacked into American networks and installed "malicious software" that could track keystrokes and glean other personal information.

Dershowitz said that the indictment against the Russian agents will not prevent election meddling from happening in the future.

"I don't think it does us very much good to see these indictments to come down," he said.

Rosenstein said there are "no allegations that Americans knew they were corresponding with Russian intelligence officers."

He added that President Trump was made aware of the indictments earlier in the week, adding that the suspects have not been apprehended as of yet.

Dershowitz added that he thinks it's a good idea by Trump to ask Russian President Vladimir Putin about any election meddling, but that Putin will simply deny it happened.

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