(Jessica Gresko/AP)

Freshman Rep. Trey Radel (R-Fla.), who is undergoing treatment after pleading guilty to cocaine possession last week, said he's doing well but that people are harassing him at the treatment facility.

Radel, who is staying at Hazelden Addiction Treatment Center in Naples, Fla., told a reporter from the Naples Daily News, "I feel great."

"I am here focused on my family and my health," he said. But, he added, "It really is upsetting, as I sit here and work on focusing on my family and health, with people coming and harassing me."

It's not clear whether Radel was referring to the reporter or someone else. The reporter, who visited Radel in an outdoor smoking area Tuesday morning, said the congressman was pleasant but that he wouldn't expound on who is harassing him.

The Florida state GOP chairman, Lenny Curry, called for Radel's resignation late Monday, and potential candidates are already lining up for the seat.

Among the potential hopefuls are former congressman Connie Mack (R-Fla.) and the man Radel beat in a 2012 primary, Chauncey Goss.