SANTA CRUZ, Calif. -- Two 29-year-old Santa Cruz men have been arrested in connection with the disappearance of a Los Angeles man and police are searching for a third suspect in what is now being treated as a homicide investigation, Santa Cruz police Capt. Steve Clark said Friday.

Stewart Skuba and Kenneth Clamp were arrested Thursday for their alleged involvement in what police believe was the kidnapping and robbery of Elias Sorokin, who was last seen on July 20, according to Clark.

Adam Hunt, a 29-year-old Watsonville man, is still outstanding, Clark said.

Investigators believe Sorokin was kidnapped and robbed during a marijuana deal at a home in the 200 block of Felix Street in Santa Cruz, Clark said.

Based in part on evidence recovered from the home, authorities are treating the case as a homicide investigation, and are continuing to work to locate Sorokin.

He was last seen on July 20 in Santa Cruz. He missed business meetings in Los Angeles the next day, and friends and family have been unable to reach him. Someone tried unsuccessfully to access his checking account at businesses in Santa Cruz and Watsonville during the past week.

Sorokin's charred truck was also found late Tuesday, according to the Santa Cruz County Sheriff's Office.

Authorities responded to reports of a burning vehicle along Smith Grade Road near Empire Grade in Bonny Doon around midnight on Tuesday. Upon arrival, it was discovered that the 2007 Toyota Tacoma belonged to Sorokin, according to sheriff's Sgt. Greg Lansdowne.

The charred truck was seized and is being examined by the crime scene investigation unit, according to Lansdowne.

Skuba was arrested for kidnapping with the intent to commit robbery, while Clamp was arrested for a parole violation, but is believed to have some involvement with Sorokin's disappearance, Clark said.

Hunt is also believed to be directly involved in the kidnapping and robbery, and there is a $1 million warrant for his arrest, according to Clark, who said he did not know if Hunt is armed, but he is believed to be dangerous.

Anyone with information about the whereabouts of Hunt is encouraged to call 911.

The sheriff's office, along with the Santa Cruz and Watsonville police departments, are assisting the Los Angeles Police Department, which is leading the investigation.