A plea entry was postponed this morning for a 21-year-old man accused of kidnapping and murdering Morgan Hill teenager Sierra LaMar.

Antolin Garcia-Torres has been charged with murder with the special circumstance of committing the murder during a kidnapping, and is being held without bail in Santa Clara County Jail.

Garcia-Torres did not appear in Santa Clara County Superior Court Tuesday morning but an attorney appeared on his behalf. No plea was entered, and the hearing was continued to Aug. 29.

Sierra, 15, went missing after leaving home to take the bus to school the morning of March 16.

She has not been found but was believed to have been murdered.

Garcia-Torres was arrested on May 21 and charged with killing her after DNA believed to be that of Sierra was found in his red Volkswagen Jetta.

San Jose resident Renee Figueira, a volunteer who is part of the continuing efforts to find Sierra, was among those in court Tuesday morning and said she was not disheartened by the delay.

"We have more time to find her ... to bury him in court," Figueira said.

Figueira said she and about 40 other committed volunteers were "like a family" and continue to cover new ground, searching for the teen on Wednesdays and Sundays.

She said of Garcia-Torres, "I really wish he would just tell us where she is and give us some closure."

After Garcia-Torres was arrested, Sheriff Laurie Smith said at a news conference that it did not appear that the former Safeway worker and the missing teen knew each other.

Volunteer search efforts for Sierra were continuing, and a sheriff's dive team has searched a number of local reservoirs as part of the investigation.