UPDATED: Sergeant in Sheriff's Office Arraigned on Drug Charges

*UPDATED at 12:35 p.m.

WOBURN – A Middlesex Sheriff’s Department sergeant from Somerville was arraigned Tuesday in Woburn District Court after being arrested and charged with receiving cocaine from an undercover state trooper.

Judge Paul Yee ordered Michael Dell’Isola, 51, be held on $1,000 cash bail with the condition that he stays away from the Sheriff’s Department, according to Middlesex District Attorney Gerry Leone.

Dell'Isola is slated to reappear in court June 8 for a probable cause hearing.

“This defendant is alleged to have accepted illegal narcotics and money from an undercover state trooper this afternoon, in violation of the public trust placed in all employees who engage in the care, custody and control of prisoners," Leone said on Monday. “I commend the work of the Massachusetts State Police and investigators from the Middlesex Sheriff's Department who uncovered this defendant’s illegal actions.”

 “Upon being appointed (Middlesex County) Sheriff, I promised to restore public confidence in this proud and historic department,” Peter Koutoujian said.  “The arrest today of Sergeant Michael Dell’Isola is a direct result of this commitment.

After receiving an anonymous tip, the Middlesex Sheriff's Office began an investigation, said Koutoujian.

"Our Internal Affairs unit immediately turned over all information to the Middlesex District Attorney’s Office and worked hand in hand with the State Police throughout the investigation," Koutoujian said. "Sergeant Dell’Isola has been employed by the Middlesex Sheriff’s Office for 28 years and has been suspended pending the outcome of the ongoing investigation. If these allegations are true, the actions of one officer should not taint the good work performed each day by the dedicated men and women of the Middlesex Sheriff’s Office.

"I would like to thank the Middlesex District Attorney’s Office and the State Police for their quick response to our investigation."

Authorities maintain that the Massachusetts State Police assigned to the D.A.’s office received a tip-off about the defendant’s illegal activities, spurring an investigation that began in April. Monday’s arrest was the conclusion of the investigation; the defendant allegedly accepted cocaine and $500.

Once in custody he was transported for booking to the Medford State Police Barracks.

These charges are allegations, and the defendant is presumed innocent until proven guilty.