Marc Klaas and his national support team have left town, but they will continue to work behind the scenes, and Burnett Elementary School will continue to be a focal point for search efforts.
Sunday, the KlassKids Foundation launched a 24-hour online vigil for Sierra. The campaign asked people to replace their social media profile picture with one of Sierra until 6 p.m. Monday night.
Alanna Bautista of Morgan Hill is among those taking part.
"They do it all the time with breast cancer awareness, with everything, you post statuses. It spreads really fast and I think that it's really effective to do that for Sierra," Bautista said.
Sierra disappeared the morning of March 16. Investigators call her case a probable abduction. Last week more than 3,000 people joined a community-wide search effort. The national organizations supporting daily searches left town Monday morning, but they trained a local team of people to keep the momentum going strong.
"They are definitely available and willing and will be coming back to Morgan Hill as needed. All we have to do is ask and he [Klaas] and all the other support organizations are going to be here," community search director Brian Miller said.
Another community-wide search is planned for Saturday, which is why the Burnett School Search Center is staying intact and hundreds of volunteers are saying they will return for new search assignments.
"We're sort of all in this together. As a community we need to help find this child for the parents and bring her home safely," volunteer searcher Cecelia Ponzini said. "It is very emotional."
The sheriff's office says its detectives have received over 900 tips so far in the case. The sheriff's office and other official agencies have logged more than 5,000 hours on the investigation.
They are still waiting for lab results on evidence recovered, including Sierra's cellphone and purse.