A state senator admitted an affair with a 21-year-old Statehouse intern, a relationship that already had led a local political leader to ask for his resignation.

Howard County Republican Party Chairman Ronald Metz said Friday he had urged state Sen. Steve Johnson within the past two weeks to suspend his re-election campaign and give up his Senate seat.Metz said Johnson, a Republican, did not specifically admit the affair when he talked to him.

But on Friday, Johnson issued a statement admitting a "brief" extramarital affair, calling it "a moral and ethical wrong."