Former Somerville Postal Worker Pleads Guilty to Cocaine Dealing

Sean Williamson joins Gerard Harrington and William Zuluaga in pleading guilty to dealing cocaine, some of it done out of the Union Square Post Office. A fourth man is also charged.

Editor's note: Below is an announcement from the office of the U.S. District Attorney of Massachusetts.

Williamson worked out of the post office in Union Square. 

Other defendants related to this case are Gerard Harrington of Stoneham, William Zuluaga, of East Boston, and John Thibedeau, of Waltham. Thibedeau is expected to plead guilty on April 23. Zuluaga pleaded guilty on Jan. 18 and is schelued for sentencing on April 25. Harrington pleaded guilty on March 7 and is expected to be sentenced on June 12.


From the District Attorney's office:

A former United States Postal Service employee pleaded guilty in federal court today to charges stemming from his involvement in a drug conspiracy.

Sean Williamson, 42, pleaded guilty to one count of conspiracy to possess with intent to distribute and five counts of possession with intent to distribute and distribution of cocaine. Harrington, along with co-conspirators John Thibedeau, William Zuluaga and Gerard Harrington, were indicted in Sept. 2011. Harrington and Williamson are former Postal Service employees who worked out of the Somerville Post Office.

The prosecutor told the Court that the government’s evidence included video and audio recordings of the four co-conspirators conducting their drug transactions beginning in May 2011, and continued on at least five different occasions through Sept. 30, 2011, the date of Williamson’s arrest.

Judge George A. O’Toole Jr. set sentencing for July 17, 2012 at 2:00 p.m. Williamson faces up to 20 years in prison to be followed by at least three years of supervised release, and up to a $1 million fine on each count.

U.S. Attorney Carmen M. Ortiz and Rafael Medina, Special Agent in Charge of the United States Postal Service, Office of Inspector General, Northeast Area Field Office, made the announcement today. The case is being prosecuted by Assistant U.S. Attorney Eugenia M. Carris of Ortiz’s Public Corruption and Special Prosecutions Unit.


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