HOUSTON, July 2 (Reuters) - A bid exceeding $10 billion

has been submitted by a group led by commodities house Vitol in

a court-organized auction of shares in the parent of

Venezuela-owned refiner Citgo Petroleum, two sources with

knowledge of the offer told Reuters on Wednesday.

A court officer overseeing the auction is expected to

recommend a winner on Wednesday unless he requests more time to

evaluate bids submitted in the last minute.

Vitol did not immediately reply to a request for comment.