An auction house owner has testified OJ Simpson plotted and led an amateur sting operation on a pair of sports collectors in a Las Vegas hotel room to retrieve memorabilia.

Thomas Riccio said he and the defendant spent weeks planning the confrontation with two sports collectors at the Palace Station Hotel and Casino.

He portrayed Simpson as being the driving force behind the confrontation at the Palace Station Hotel and Casino back in September.

But he also said the defendant never drew a gun during what prosecutors say was an armed robbery of his own sports memorabilia.

Prosecutors allege three men, including Simpson, stormed into the hotel room of sports collectors Alfred Beardsley and Bruce Fromong at the Palace Station hotel and took thousands of dollars worth of Simpson's own memorabilia at gunpoint.

Simpson was arrested days after the alleged incident and held in jail for several days.

He denies the charges that were brought against him, but if he is convicted Simpson could be sent to jail for the rest of his life.

© Independent Television News Limited 2009. All rights reserved.