A sleepover involving three teenagers in California ended in a brutal attack Sunday night.

After the trio fell asleep in a garage where they often play video games, a group of masked assailants entered and beat them with hammers.

As Phil Gomez reports, one of the victims is now in a coma.

ALL IS QUIET IN THE ROLLING HILLS COMMUNITY TUESDAY.

Natsot

"Looks like we're going to have 3 patients"

MONDAY MORNING NEIGHBORS WOKE UP TO A DIFFERENT SCENE.

SHERIFF'S DEPUTIES INVESTIGATING A HORRIBLE CRIME IN THE QUIET COMMUNITY,

AND COLLECTING EVIDENCE FROM THIS HOUSE ON MONTE VISTA DRIVE.

NEIGHBORS WERE IN SHOCK.

Ted Lux/Neighbor

"Yesterday we saw the yellow tapes up over here. It scared the heck out of us. Okay and we saw the sheriff and I guess, the CSI people too. And then the rumors started building up about what happened . Apparently, the 3 kids were hurt pretty bad."

TWO SIXTEEN YEAR OLD TEENAGERS WERE TREATED FOR HEAD INJURIES AND RELEASED FROM THE HOSPITAL

A GO FUND ME PAGE HAS BEEN SET UP BY THE PARENTS OF 17-YEAR OLD ALEX .

THEY GAVE K-S-B-W PERMISSION TO USE THESE PHOTOGRAPHS OF THEIR SON.

BELLA DUFEK KNEW ALEX FROM SCHOOL

Bella Dufek/Neighbor

"What I have heard it's really tragic I knew Alex briefly when he was in school. He was a really nice kid."

THE INVESTIGATION IS BOGGED DOWN.

THE QUALITY OF SURVEILLANCE VIDEO ISN'T VERY GOOD.

THE SUSPECTS ALL WORE MASKS AND THE MAIN WITNESS REMAINS HOSPITALIZED IN CRITICAL CONDITION.

Brian Cleveland/Santa Cruz County Sheriff's Office

"I'd the majority is not being able to get the information from people as well as surveillance video in the area. We have some cameras that show a vehicle leaving, however it's dimly lit and its difficult to capture that car leaving."

TONIGHT THERE ARE MORE QUESTIONS THAN ANSWERS ABOUT WHY THESE TEENS WERE TARGETED.

AND NEIGHBORS WONDERING ABOUT THE SAFETY OF THEIR COMMUNITY.

Ted Lux/Neighbor

"The old saying that this is a perfect neighborhood. It was more of a shock that it actually happened"

ALEX HAD TO HAVE PART OF HIS SKULL REMOVED TO RELIEVE SWELLING.

POLICE SAY THE ASSAILANTS KNEW EXACTLY WHERE TO FIND THE TEENAGERS AND DO NOT BELIEVE THE ATTACK WAS RANDOM.