SAN DIEGO -- Two Las Vegas men accused of paying street people to fight for a commercial video production, some of which was shot in San Diego, are expected to surrender to authorities in El Cajon Thursday.

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'Bumfight' Video, Suspects' Attorney Talks Hear From Arresting Officer

If things go as planned, Michael Joseph Slyman and Daniel Jamon Tanner, both 21, are expected to enter pleas immediately to charges of conspiracy, solicitation of a felony crime, and illegally paying people to fight, according to Liz Pursell of the San Diego District Attorney's Office.

Police also are investigating an allegation that the suspects threatened a witness in the case, Garcia said.

Two other Las Vegas residents, Zachary Bubeck, 24, and Ryan Edward McPherson, 19 (pictured, right), were arrested recently after a three-month investigation by the La Mesa Police Department into the "Bumfights" tapes, said Lt. Raul Garcia.

An Oct. 10 preliminary hearing is scheduled for Bubeck and McPherson.

The $19.99 videos -- 300,000-plus copies of which reportedly have been sold via the Internet -- show disheveled, bedraggled men engaging in fistfights and self-abuse, such as running headlong into steel doors and leaping off bridges.

A Web site promoting "Bumfights, Vol. 1" touts it as "the world's fastest-selling independent video" and includes images of brawling, bloodied "drunks" and "crackheads," semi-clad women, and "Rufus the Stunt Bum."

Its producers offered street people cash as well as food, liquor and hotel rooms in exchange for their participation. The producers also warned them not to report the arrangement to authorities, according to investigators.

One person suffered a broken leg during a taping session in La Mesa, the lieutenant said.

"They were offered money and and moved to Las Vegas in furtherance of this act," he added. They "have since returned to San Diego County and are cooperating with the criminal investigation," Garcia said.