Andover's 'Sample Dude' Sentenced To 91 Months On Fentanyl Distribution Charges

CONCORD, N.H. -- An Andover man who goes under several aliases has been sentenced to 91 months in federal prison for participating in a conspiracy to distribute in excess of 40 grams of fentanyl. Rolando Sierra-Oyola, 30, who also goes by the name William Santiago, had pleaded guilty to the charges in June.

Sierra-Oyola sold fentanyl in the greater Lawrence area between October 2015 and July 2016. In addition to being seen delivering the drugs himself, he also dispatched drug runners to deliver fentanyl to customers n New Hampshire. Some of his customer took to calling Sierra-Oyola "Sample Dude" because he often gave customers free samples of fentanyl to entice them to purchase larger quantities.

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"This defendant distributed substantial quantities of a very deadly substance. I commend the law enforcement officers who worked together to put this drug dealer out of business," Acting United States Attorney John J. Farley said in a statement. "We will continue to work each day to target drug trafficking organizations that are responsible for distributing fentanyl and other opioids in our community."

Police were initially tipped off to Sample Dude after searching the phone of a 29-year-old man who had died of an overdose in Portsmouth, N.H. and finding his number stored in contacts. Law enforcement made eight undercover buys from Sierra-Oyola and used a confidential informant in building their case against him.

Earlier:

• Andover Fentanyl Dealer Pleads Guilty

Patch file photo.

Dave Copeland can be reached at dave.copeland@patch.com or by calling 617-433-7851. Follow him on Twitter (@CopeWrites) and Facebook (/copewrites).