(CBS) — The search for a missing Naperville Central graduate is taking a different tack more than four months after he disappeared in Southern California.

All information about where 19-year-old Bryce Laspisa may be is now being directed to a single tip line, according to the private investigator hired by his family.

PI Shannon Tulloss tells WBBM tips that were going to local police weren’t being followed up right away – costing Bryce’s parents precious time in tracking down their only son.

A website set up to find Laspisa says he was last heard from at 2 a.m. on Aug 30, when he called his mom.

Hours later, his SUV was found at the bottom of a ravine near Castaic Lake in Santa Clarita with a broken rear window and blood inside.

Tulloss says Bryce’s parents went through the holidays without him for the first time and it was rough.

They’re now asking anyone with information about Bryce to call 949.292.4200.

He’s 5’10, 160 pounds with red hair, blue eyes and a tattoo of a bull’s head on his upper left arm.

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