systems there is more tonight at 6:00 including a response from embattled chancellor here at uc dave kbris -- davis. >> nearly 200 people turned out to look for evidence in the search for missing morgan hill teenager sierra lamar. she disappeared near hi a month ago. the search is now souchblg gilroy and we are in the search center in morgan hill. >> the sheriff's office has divers on stand by in case some sonar images reveal anything and plan on sending out deputies on dirt bikes to remote areas and there is some community volunteers covering rugged terrain south of us. this search is getting more difficult. >> can you push forward over there? >> worried about finding a body. i don't think she's anywhere of her own free will. >> the weeds as tall as volunteers and odds seem daunting. >> you can't think about terrible things. have you to get serious. >> for investigators serious means revisiting waterways. this video from last month. today they're reviewing underwater images taken yesterday. and they're close to her home. >> depending on if any objects or items coming up on the imagery the