LAUDERHILL, Fla. -- Two suspects were arrested and a Lauderhill pharmacy was closed down in an undercover investigation into the illegal sale of prescription medicines.

According to the Broward Sheriff's Office, the investigation lasted from October 2008 through this week.

The Friendly Pharmacy was closed on June 26 after, BSO said, investigators seized hundreds of signed fraudulent prescriptions that were filled by so-called "doctor shoppers."

BSO said 49-year-old David Naylor was a frequent customer of the pharmacy, where he spent more than $47,000 to fill 85 prescriptions for Oxycodone within seven months. Police said Naylor got the prescriptions from 13 different doctors in Broward, Miami-Dade and Palm Beach counties by "doctor shopping," which means he went from doctor visit to doctor visit to get the prescriptions, which he would then fill so he could sell the pills.

According to BSO, Naylor was prescribed 2,569 Oxycodone pills in one month, which he sold for between $8 and $30 per pill.

Naylor was arrested, but he has since been released on bond. BSO said Naylor was already on federal probation for possession of cocaine with the intent to sell.

Kari Giannomoros, 49, also was arrested in the investigation. Police said detectives were watching as Giannomoros sold 2,000 Oxycodone pills worth $20,000.

BSO said investigators found 1,664 Oxycodone pills, 1,126 Hydrocodone pills, hundreds of blank prescriptions, 273 grams of marijuana and $10,868 in cash at Giannomoros' house. Police said there was also evidence that she frequented the Friendly Pharmacy.

Giannomoros faces drug trafficking charges.