By Marianna Parraga

HOUSTON (Reuters) -Gold Reserve on Wednesday filed a motion to disqualify a rival bid from an affiliate of hedge fund Elliott Investment Management that a Delaware court this month selected as frontrunner in an auction for Citgo Petroleum’s parent, a court document said.

A court officer overseeing the auction of PDV Holding, parent of Venezuela-owned refiner Citgo, determined this month that a $5.86 billion offer from Elliott affiliate Amber Energy was the best bid received in the competition, even though he had in July recommended a $7.4 billion bid from a group led by Gold Reserve subsidiary Dalinar Energy.

The officer must now submit a new recommendation on Friday, which will be evaluated by Judge Leonard Stark next month.

The determination that Amber’s bid price

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