PORTLAND, Maine — A federal grand jury has indicted another defendant in one of the biggest drug-conspiracy cases ever prosecuted in Maine.

As a result, the trial for several members of the Iron Horsemen Motorcycle Club who are accused of running an elaborate drug ring in Maine has been pushed back until at least March.

Thirty-nine-year-old Ramon Dellosantos of Haverhill, Mass., pleaded not guilty to a charge of conspiracy to possess and distribute cocaine and marijuana at his initial appearance Tuesday in U.S. District Court in Portland.

Federal prosecutors say members and supporters of the Iron Horsemen funneled drugs from Massachusetts to Maine, where they were distributed throughout the state from at least 2004 until December 2007. There are 20 defendants in the case.