As volunteers in Morgan Hill continue their search for Sierra LaMar, the family of the missing teen on Wednesday announced the reward fund has increased to $35,000.

Sierra's father, Steve LaMar, said the reward is "for any information that leads to the return of Sierra to her family" or any information "that leads to the successful prosecution of any individual or individuals involved in her disappearance."

The increase was made possible through fundraisers and donations, Steve LaMar said.

"As we've said all along, we're hoping it might motivate someone who might not otherwise come forward," he said. "We hope someone would come forward because it is the right thing to do.

"But if it takes this reward, we're happy to offer it."

Although Sierra has not been found, a 21-year-old Morgan Hill man has been charged with kidnapping and killing the teen, who has been missing since the morning of March 16 when she left home to catch a school bus at Dougherty and Palm avenues.

Antolin Garcia Torres, 21, has not yet entered a plea and is next scheduled to appear in court on July 31.

The search for Sierra continues through the KlaasKids Foundation for Children, which is organizing volunteer searches on Wednesdays and Saturdays, according to Steve LaMar.

Volunteers numbering between 70 to 80 on Wednesdays and about 120 on Saturdays are searching new areas and researching other parts of South County.

"We're still getting really good turnout," LaMar said.

The Santa Clara County Sheriff's Office is continuing its investigation into the kidnapping and murder but does not have any more planned water searches, according to Sgt. Jose Cardoza.

The sheriff's office has scoured just about every waterway within a 12-mile radius of where the teen was last seen, including five reservoirs.

Although no additional water searches are planned, divers will return to the water based on tips and leads.

"There will be more water and ground searches," Cardoza said. "The case is still open. We still have to find her."

Contact Mark Gomez at 408-920-5869. Follow him on Twitter @MarkMgomez