The Latest on a dig to search for a California college student missing since 1996 (all times local):

8 p.m.

Remains have been found during a three-day search for the body of a California college student missing for more than 20 years but authorities say it may take months before they learn if they are human.

Authorities say a three-day excavation process ended Friday.

Sheriff's spokesman Tony Cipolla says the dig in three spots at the edge of California Polytechnic State University, San Luis Obispo was completed on Friday night. He says all three spots yielded various items of interest, including remains that will need to be tested to determine if they're human or animal.

Cipolla says the testing will be done by forensic anthropologists at the FBI's headquarters in Quantico, Virginia, and could take months.

Dogs trained to detect old human remains identified the three excavation sites in January.

Nineteen-year-old Kristin Smart was last seen returning to her dorm from a party in May 1996.

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6 p.m.

Authorities are nearing the end of a three-day search for the body of a California student missing for more than 20 years.

A spokesman for the San Luis Obispo County Sheriff's Office says the search for 19-year-old Kristin Smart will end Friday night at California Polytechnic State University, San Luis Obispo.

Spokesman Tony Cipolla says the search uncovered various items of interest, including remains that will need to be tested to determine if they're human or animal.

He says the testing will be done by forensic anthropologists at the FBI's headquarters in Quantico, Virginia, and could take months.

Dogs trained to detect old human remains identified the three excavation sites in January.

Smart, of Stockton, California, was last seen returning to her dorm from a party in May 1996.