The Iberville Parish Sheriff’s Office and Plaquemine Police Department arrested 21 suspected drug dealers Wednesday morning as part of an ongoing undercover investigation.

Sheriff Brett Stassi led the tightly guarded joint investigation as part of his effort to eliminate the sale of illicit drugs, especially prescription medications, in the parish.

The undercover investigation has been going on since the Sheriff’s Office’s previous roundup in 2013, according to a news release about the string of arrests. The undercover officers targeted illegal drug distributors with a special emphasis on prescription drug pushers.

Stassi said the officers made dozens of undercover drug purchases of a variety of prescription drugs from unsuspecting dealers.

They were assisted in their investigation by the West Baton Rouge Sheriff’s Office, he said.

“These arrests are from White Castle to Maringouin and Plaquemine to St. Gabriel,” Stassi said in the release. “No area of the parish was ignored. We will continue to go after drug dealers here, using a variety of investigative tools. This is an ongoing area of emphasis to get the drugs out of Iberville.”

The suspects were all booked into the parish jail Wednesday morning on a variety of drug-related charges.