GRAND ISLE, La. -- Three members of the police department are under arrest after an investigation.

Captain Tyson Gravette, 32, and Officer Cameron Westbrook, 27, have both been booked with one count of extortion and malfeasance in office. Lt. Elgene Gary, 72, has also been charged with malfeasance in office.

The investigation by Jefferson Parish Sheriff's Office was announced in March, after a drug operation led to the arrest of 83 people. JPSO seized evidence, guns, police reports and computers from the Grand Isle Police Department.

MORE: JPSO investigates Grand Isle police after drug operation

Sheriff Newell Normand said he and his deputies had been receiving reports of “problematic things” happening when Grand Isle Police had been making arrests in recent years. While unrelated to the drug probe, Normand’s officers executed the search warrant of Grand Isle Police Headquarters as they were also searching for the people indicted on drug charges.

"We were made aware of a number of improprieties within the Grand Isle Police Department during the investigation," said Normand.