80S SHOT AND KILLED HIS WIFE AND TWO ADULT CHILDREN BEFORE THEN TAKING HIS OWN LIFE. ONE PERSON INSIDE THE HOUSE DID SURVIVE, AND THE MOTIVE REMAINS A MYSTERY. >> TONIGHT. EYEWITNESS NEWS REPORTER LEANNE SUTER IS LIVE IN GRANADA HILLS WITH THE LATEST DEVELOPMENTS. LIANE JURY AND MICHELLE. >> FRIENDS SAY THAT A SOUL SURVIVOR WAS AN ADULT DAUGHTER WITH SPECIAL NEEDS. SHE ESCAPED UNHARMED BY HIDING FROM HER FATHER AND CALLING 911. THAT'S WHEN AUTHORITIES MADE THE HORRIFYING DISCOVERY INSIDE THIS HOME. HERE. DEVASTATED FAMILY MEMBERS TOO UPSET TO TALK. GATHER THE FLOWERS LEFT ON THE FAMILY'S GATE. A FAMILY OF FOUR DEAD AFTER THE ELDERLY FATHER SHOT AND KILLED HIS WIFE AND TWO ADULT CHILDREN BEFORE TURNING THE GUN ON HIMSELF. >> IT SEEMED LIKE A NORMAL FAMILY, I GUESS, YOU KNOW? AND, UH, SO, I MEAN, OBVIOUSLY, LIKE ANYBODY WOULD. HOW COULD YOU HOW COULD THAT HAPPEN? YOU KNOW, SO, YOU KNOW, AND I HEARD IT LAST NIGHT AND, UH, SO I SAID, I HAVE TO COME BACK HOME GAMES OF FLOWERS. >> THE DEADLY GUNFIRE ERUPTED JUST BEFORE SEVEN ON LERDO AVENUE. A DAUGHTER WITH SPECIAL NEEDS CALLING 911 AFTER HIDING IN ANOTHER ROOM, POLICE HAD TO FORCE THEIR WAY INSIDE. THAT'S WHEN THEY FOUND THE FATHER, SAID TO BE AROUND 80 YEARS OLD, DEAD. INVESTIGATORS SAY HE HAD SHOT AND KILLED HIS WIFE. ANOTHER DAUGHTER AND HIS SON BEFORE TURNING THE GUN ON HIMSELF. SO MY ROOMMATES HAVE HELPED HIM. >> LIKE YOU KNOW, TAKE HIS TRASH OUT AND STUFF. HE DIDN'T. HE DEFINITELY DIDN'T SEEM LIKE THE TYPE, BUT YOU NEVER KNOW. SO I MEAN, MAYBE IT WAS A BREAKDOWN. I'M NOT SURE. IT IS REALLY, REALLY SAD THOUGH. >> AT THIS POINT, DETECTIVES DON'T KNOW WHAT THE MOTIVE WAS. IT'S ALL PART OF THE ONGOING INVESTIGATION, THE SHOCKING CRIME LEAVING THIS UPSCALE NEIGHBORHOOD STUNNED. >> IT'S PRETTY CREEPY. IT'S LIKE A BAD HORROR MOVIE IS WHAT IT IS . THAT'S WHAT I HAVE TO SAY. I DIDN'T KNOW THE PEOPLE. AND I FEEL REAL BAD. I'VE MET MOST OF THE PEOPLE AROUND HERE AT ONE TIME OR ANOTHER, BUT I NEVER MET THOSE PEOPLE. I JUST REMEMBER WHEN THEY BUILT THE HOUSE. >> INVESTIGATORS HAVE NOT YET RELEASED THE NAMES OF ANY OF THE FAMILY MEMBERS. AGAIN, AT THIS