Republican presidential candidate Ben Carson blasted an unnamed 2016 rival Monday night, saying a campaign had played “dirty tricks” on him by suggesting to voters shortly before the caucusing began that he had dropped out of the race.

“I was reasonably happy today until I discovered the dirty tricks that were going on and people spreading rumors that I had dropped out and that people should caucus for somebody else,” said Carson, opening his concession speech at the Marriott hotel in West Des Moines.

“I mean do you think that’s something that is acceptable?” he asked.

Carson later went on on to cite Joseph Stalin, saying that socialist, and murderer wanted to destroy America by undermining its spirituality life, patriotism and morality.

“We are in the process of collapsing from within … if we continue to accept deceit and dirty tricks and lies,” Carson said. “And people who do that are still viable candidates for president of the United States and we accept it and that’s the problem.”

Carson’s campaign did not immediately reply with a request from TheBlaze for more details.

It appeared late Monday night that Carson would come in a distant fourth behind Sen. Marco Rubio (R-Fla.) in the Iowa caucuses, garnering just 4.5 percent of the votes.

Apparently undaunted, however, Carson concluded his speech by telling supporters he wasn’t going anywhere, except back to Florida for 12 hours to retrieve a set of fresh clothes.

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