MONTGOMERY, Ala. — As the Alabama Legislature came back into session Tuesday after a 12-day break dominated by news of a sex scandal involving the governor, a state lawmaker filed articles of impeachment against Gov. Robert Bentley, who admitted to having made racy remarks to one of his closest aides, but has been accused of much more.

Flanked at a news conference by three lawmakers representing both parties, State Representative Ed Henry, a Republican, presented the proposed articles declaring the governor, also a Republican, “unfit to serve the State of Alabama.”

“We’re looking at this governor who has essentially betrayed the trust of the people,” Mr. Henry told reporters at the State House. “The only course the people of Alabama have to address this issue is through the impeachment process.”

It is unclear whether the resolution has the votes to move forward, but it ensures that a scandal that Mr. Bentley has tried to push aside is not going to go away easily, if at all. While the more lurid aspects of the scandal center on an alleged sexual relationship between the governor and Rebekah Caldwell Mason, who resigned last week as Mr. Bentley’s senior political adviser, the particulars of the proposed resolution show just how multidimensional the scandal has become.