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Sierra LaMar hunt continues underwater in Santa Clara County

Sierra LaMar, 15, is seen in this file photo. LaMar went missing March 16 while on her way to school.

April 13, 2012 12:00:00 AM PDT
Volunteers have planned another search this weekend for a missing teen in Santa Clara County.

Sierra LaMar hasn't been seen since March 16. The 15-year-old disappeared on her way to school.

Police think LaMar may have been abducted. They've found her cell phone, purse and some clothing.

A dive team searched two reservoirs near LaMar's home on Thursday, but didn't find anything.

Investigators are also looking at underwater sonar images from earlier in the week.