The arraignment for Zachary Kachmar, pictured, who was arrested Sunday in Rocklin in connection with the stabbing death of Robert Earl Vickney Jr., was continued until July 29, a news release from the Placer County district attorney states.
The proceeding will begin at 8:30 a.m. in Department 31 of Placer Superior Court.
The Rocklin Police Department submitted the preliminary case to the Placer County District Attorney's Office, and it is under review.
Detectives received information after Kachmar's arrest suggesting he might have acted in self defense. That and other information in the case are being investigated.
Kachmar, 20, of Rocklin, will be released from custody pending the end of the investigation.
Vickney, a 51-year-old resident of Rocklin, was stabbed to death Saturday during a backyard party at his home in the 6200 block of Swan Court.
Vickney was stabbed once in the chest. He was taken to Sutter Roseville Medical Center, where he was pronounced dead.
Investigators determined that Kachmar and Vickney had argued at the party, and Kachmar allegedly pulled out a pocket knife and stabbed Vickney once.
The preliminary police investigation indicates that Vickney and Kachmar were arguing over a broken drinking glass shortly before the stabbing occurred, said Lt. Lon Milka of the Rocklin Police Department. Police believe the argument escalated from there.
John Burnet, who said he left the party about 30 minutes before the stabbing occurred, called the party "very low-key." He couldn't imagine what might have led to the incident, he said.
Benjamin Mullin contributed to this report.