Two and a half months after Morgan Hill teen Sierra LaMar disappeared, investigators said Tuesday the 15-year-old is dead.
"We have adequate facts, we have strong facts to believe she has been murdered," Santa Clara County Sheriff Laurie Smith said.
Antolin Garcia-Torres, 21, was arrested for the girl's kidnapping and murder Monday night in Morgan Hill.
"It's my belief this was purely random," Smith said. "It was an absolute stranger abduction ... We believe this is the worst kind of crime: a stranger abduction of a young girl."
Garcia-Torres was arrested Monday at the Morgan Hill Safeway, where he had worked. Although it was initially reported he lives in San Martin, Smith said he is a Morgan Hill resident and has lived in the community much of his life. He is currently unemployed.
He has been under surveillance for nearly two months, Smith said.
Read the on Gilroy Patch.