Aurora – Police are looking for a man they believe is one of two shooters in a July 4, 2004, homicide that also may be connected to a June double homicide that killed a witness.
Sir Mario Owens, 20, of Denver is being sought by Aurora police on suspicion of first-degree murder in the shooting death of Gregory Vann at Lowry Park following a Fourth of July celebration.
Authorities already have charged Robert Keith Ray, 20, with first-degree murder in that shooting but now believe a second shooter was at the scene.
The arrest warrant for Owens was signed Thursday by a judge in the 18th Judicial District.
It is a case authorities believe is connected to another deadly shooting on June 20 that killed two Colorado State University graduates, Javad Marshall-Fields and Vivian Wolfe.
Marshall-Fields, 22, was one of the victims of the first shooting on July 4, 2004, suffering a nonlethal gunshot wound. According to court documents, Marshall-Fields was trying to break up an argument involving Vann when two men came out of a gold-colored sport utility vehicle with guns firing.
Marshall-Fields became a key witness for the prosecution against Ray, saying he had seen Ray drive the get-away vehicle from the park. He hadn’t identified Owens.
Marshall-Fields was never able to testify because he was killed a week before Ray’s trial was to start.
No one has been arrested in that shooting.
Authorities wouldn’t say why they now believe Owens is one of the shooters, and they wouldn’t release a photograph. If arrested, Owens would be held without possibility of bail.
Owens doesn’t have any violent crimes on his arrest record in Colorado or any felony convictions in Colorado courts.
Staff writer Jeremy Meyer may be reached at 303-820-1175 or jpmeyer@denverpost.com.



