HARTFORD, Conn. (AP) — U.S. Sen. Richard Blumenthal is calling on President Donald Trump to cancel his meeting with Russian President Vladimir Putin, now that charges have been filed against 12 Russian intelligence officers for alleged hacking offenses during the 2016 presidential election.

The Connecticut Democrat said Friday that Trump "unquestionably" should cancel Monday's meeting in Helsinki.

Blumenthal also says Trump should demand Russia extradite the accused agents and previously indicted oligarchs for prosecution in the U.S. He says the indictments announced Friday prove the special counsel's investigation of the Trump campaign is "no witch hunt."

The indictments mark the first Justice Department allegations to implicate the Russian government directly in efforts to interfere in the U.S. election.

A White House spokeswoman says the indictments contain no allegations of knowing involvement by Trump campaign officials.