Democratic presidential nominee Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE's campaign chairman appeared to express dismay as the identity of one of the San Bernardino, Calif., shooters became public, according to hacked emails released by WikiLeaks.

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"Better if a guy named Sayeed Farouk was reporting that a guy named Christopher Hayes was the shooter," John Podesta wrote in a Dec. 2, 2015, email to Karen Finney, a Clinton campaign spokeswoman.

Podesta was referring to MSNBC host Christopher Hayes, who had tweeted at the time that a U.S. citizen named "Sayeed Farouk" was believed to be one of the people involved in the shooting.

In the attack last year, 14 people were killed and 22 were injured in a shooting at a San Bernardino social center. The incident was investigated as an act of terrorism.

Syed Farook and his wife, Tashfeen Malik, were killed in a shootout with police.

The email is one of more than 11,000 published by WikiLeaks so far. On Saturday, WikiLeaks dropped a new batch of emails it says were stolen from the archive of Podesta.

U.S. intelligence agencies have said the release may be part of a Russia-backed plot to interfere with the presidential election.