Trump roasts Clinton in 2016 campaign flashback rant: 'Prosecutor should be looking at Hillary Clinton's 33,000 emails'

President Donald Trump went after a familiar foe at his campaign rally Thursday night in the middle of railing against the ongoing investigation into Russia's meddling in the 2016 election, saying "what the prosecutor should be looking at are Hillary Clinton's 33,000 emails."

Trump's line attacking his opponent from last year's campaign elicited a roaring "lock her up" chant from the Huntington, West Virginia crowd at the Big Sandy Superstore Arena, reminiscent of last year's contentious campaign.

"They should be looking at the paid Russian speeches and the owned Russian companies. Or let them look at the uranium she sold that is now in the hands of very angry Russians," Trump said referring to the former secretary of state.

Click through images of Trump's West Virginia rally:

"The Russia story is a total fabrication," Trump added. "It's just an excuse for the greatest loss in the history of American politics."

Earlier in the day Thursday, the Wall Street Journal revealed that special counsel Robert Mueller had impaneled a grand jury in Washington to investigate allegations of Russia's interference in the 2016 elections.

However, the president continued to denounce allegations that his campaign worked hand-in-hand with the Kremlin in front of thousands of supporters. "Most people know there were no Russians in our campaign -- there never were," the president said.

"We didn't win because of Russia, we won because of you," Trump said, gesturing toward the crowd. "We won because we totally outworked the other side. We won because millions of patriotic Americans voted to take back their country."

Trump then asked the crowd if they'd "seen any Russians in West Virginia or Ohio or Pennsylvania?"

"Are there any Russians here tonight?" Trump asked. "They can't beat us at the voting booths, so they are trying to cheat you out of the future that you want. They are trying to cheat you out of the leadership you want with a fake story that is demeaning to all of us but most importantly demeaning to our country and to our constitution."