Radio talk-show host Rush Limbaugh was booked on drug charges in Florida on Friday, but his attorneys said he had agreed to a deal enabling him to avoid prosecution in the prescription abuse case if he continues treatment for addiction problems and avoids any other run-ins with the law.

Limbaugh, a conservative darling and liberal bete noire, was booked, photographed and fingerprinted Friday in Palm Beach, Fla., then shortly released on a $3,000 bond, according to a Web site posting by the Palm Beach County Sheriff’s office. A spokesman there said there would be no further comment.

The apparent deal caps a three-year investigation into allegations originally aired by a housekeeper at Limbaugh’s Palm Beach mansion, who told the National Enquirer that the radio host had abused OxyContin and other painkillers.

Prosecutors began looking into potential “doctor shopping” by Limbaugh, who received about 2,000 pain pills prescribed by four doctors over a six-month period – all from a pharmacy near the Palm Beach house. The charge on the sheriff’s Web site was listed as “fraud – conceal info to obtain prescription.”