A Republican lawmaker who voted to expel three Tennessee Democrats for their participation in a gun control protest resigned Thursday following allegations he made unwanted sexual comments toward one, and possibly even two, interns.

Rep. Scotty Campbell (R-TN), vice chairman of the House Republican Caucus, violated the legislature's workplace discrimination and harassment policy, according to an Ethics subcommittee review from late March. There were few details in the subcommittee's findings, and Campbell has continued working.

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He was not punished or taken off any of his committees following the release of the report despite accusations of "extremely vulgar comments and other inappropriate advances," according to WTVF-TV.

The alleged bad behavior cost Tennessee taxpayers, with money spent to protect one victim by relocating her from her downtown home where she and the 39-year-old lawmaker both had apartments. Taxpayers also paid to ship her furniture back home to another part of the state and paid for a hotel so she could finish out the remainder of her internship.

Legislative officials have been tight-lipped about how much money was actually spent.

Campbell's abrupt resignation on Thursday came hours after the Nashville television station confronted him about sexual harassment allegations involving legislative interns.

Campbell told WTVF that he had "consensual, adult conversations with two adults off property."

"I did not know that a workplace policy can be enforced when you're not at work," he said.

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A few hours later, the lawmaker had resigned from the Tennessee House of Representatives "effective immediately," according to a letter obtained by the television station.

Campbell, part of the supermajority in the state House, was among the Republican lawmakers who voted to expel three Democratic colleagues for leading a gun reform protest. When asked about his vote to expel the "Tennessee Three," he said, "They broke the House rules of decorum."