SALEM, Ore. (AP) — A 35-year-old man has pleaded guilty in federal court in the heroin overdose death of a Keizer woman.

Laurin Putnam died in April 2012 at her home. The Salem Statesman Journal reports (http://stjr.nl/1vUsppL ) that in the days afterward, several people were arrested.

The U.S. Justice Department said Thursday that Sergio Quezada-Lopez was a high-level operative in the heroin distribution. It said he was in charge of a network of houses where drugs were stored in Portland and Vancouver, Washington, taking orders for heroin and directing its delivery.

The department said he pleaded guilty Monday to conspiracy to distribute heroin that resulted in death. Sentencing is scheduled Dec. 1. The minimum is 20 years, the maximum life.

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Information from: Statesman Journal, http://www.statesmanjournal.com