CENTENNIAL - Sir Mario Owens threatened to kill Javad Marshall Fields and his family if Marshall Fields testified at the trial of Owens' friend, a witness said Monday on the final day of Owens' preliminary hearing.

When the threat failed to deter Marshall Fields, the witness quoted Owens as saying, "We're going to have to get that dude before he says something."

The Rocky Mountain News is withholding the names of people who testified in the three-day preliminary hearing in Arapahoe County District Court because the charges against Owens include killing a witness.

A judge ruled Monday there is enough evidence for Owens, 21, to stand trial for the 2004 murder of Gregory Vann, a shooting that allegedly sparked the killing of Marshall Fields and his fiancee, Vivian Wolfe.

Witnesses testified that Owens shot Vann, 20, after a fight broke out following a party at Lowry Park in Aurora on July 4, 2004.

Robert Keith Ray, 20, who witnesses said was sitting in his Suburban waiting for Owens, allegedly shot and wounded Vann's brother and Marshall Fields, who had chased Owens and punched him repeatedly to keep him from leaving the scene.

Almost a year later, Marshall Fields was shot and killed on June 20, 2005, a week before he was set to testify in Ray's trial for his part in the 2004 park shooting.

Monday's final witness said he was visiting Ray the week Marshall Fields and Wolfe were killed. He said Ray, Owens and Parish Carter, 24, talked about preventing Marshall Fields from testifying by offering him $5,000 and, at one point, said they went to a nightclub Marshall Fields was at to threaten him.

"It didn't scare him," the witness said.

Owens, Ray and Carter were indicted in March on several charges, including the murders of Marshall Fields and Wolfe, who were both 22.

Owens' arraignment for the 2004 shooting is scheduled for July 24. The same day, Owens, Ray and Carter are scheduled to be arraigned on charges related to the 2005 slayings of Marshall Fields and Wolfe.