A search grew gathered to look for 19-year-old Blaze Bernstein, a University of Pennsylvania student who went missing at Foothill Ranch in California on Jan. 2. (Photo: Courtesy of the Orange County Sheriff's Department)

The parents of a University of Pennsylvania student who mysteriously disappeared in California last week are using drones to help find him.

Blaze Bernstein, 19, who had been home in Southern California for winter break, met with a friend Jan. 2 and the two drove to Borrego Park in Foothill Ranch, witnesses told the Orange County Sheriff's Department.

Bernstein apparently got out of the car about 11 p.m. and went into the park, the sheriff's department said. That's when he vanished and hasn't been heard from since, the department added.

Police do not consider the friend a suspect in Bernstein's disappearance.

As part of the desperate search for Bernstein, a friend who is involved in a group of professional and amateur drone users offered to help, said Jeanne Pepper Bernstein, Blaze's mother.

She told ABC News the drone flew for one day and teams are now combing through that footage.

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