>> FROM CBS NEWS BAY AREA, THIS IS THE EVENING EDITION. >> WE BEGIN IN THE SOUTH BAY WHERE WE ARE LEARNING MORE ABOUT THE TROUBLED HISTORY OF THE MAN WHO ALLEGEDLY KILLED THREE PEOPLE DURING A MULTICITY RAMPAGE. GOOD EVENING, I'M RYAN YAMAMOTO. >> THE CRIME SPREE BEGAN IN THE PEPPER TREE NEIGHBORHOOD, A LITTLE AFTER 3:00 YESTERDAY, WITH A STABBING AND CARJACKING. THE SUSPECT DROVE TO THE TARGET IN HILLSDALE , STABBED ANOTHER VICTIM AND DROVE AWAY WITH THE CAR. HE ALLEGEDLY HIT AND KILLED TWO PEDESTRIANS ON SANTA CLARA STREET. >> THEN, IN MILPITAS, HE STABBED ANOTHER PERSON TO DEATH IN THE GROCERY STORE PARKING LOT. HE WAS ARRESTED TWO HOURS AFTER IT ALL BEGAN. >> WE ARE GETTING OUR FIRST LOOK AT THE SUSPECT. WE BEGIN OUR TEAM COVERAGE IN SAN JOSE, WHERE HE HAS BEEN DIGGING INTO THE SUSPECT'S HISTORY. WHAT CAN YOU TELL US? >> Reporter: WELL, IT'S PART OF WHAT POLICE WERE SAYING, THEY ARE WORRIED THAT HE WOULD HAVE CONTINUED ON THIS SENSELESS VIOLENCE IF THEY WEREN'T ABLE TO GET HIM INTO CUSTODY. EACH OF THE VICTIMS WERE RANDOM BUT HE INTENTIONALLY ATTACKED ALL OF THEM. A DEADLY RAMPAGE AROUND THE SOUTH BAY ENDS WITH THREE PEOPLE KILLED AND THREE OTHERS INJURED. A DAY LATER, CITY LEADERS IN DIFFERENT COMMUNITIES ARE TRYING TO FIND OUT HOW THE SUSPECT COULD COMMIT SUCH VIOLENT CRIME. >> JUST RANDOM ATTACKS, SENSELESS ACTS THAT WERE COMMITTED. >> Reporter: POLICE SAY HE STABBED SEVERAL VICTIMS AND RAN OVER VICTIMS WITH THE CAR HE STOLE IN SAN JOSE. THE OFFICERS WERE ABLE TO TAKE HIM INTO CUSTODY AFTER CAUSING HAVOC AT MULTIPLE SCENES. SAN JOSE POLICE SAID THE SUSPECT WAS WELL-KNOWN TO THEM, HE HAD CRIMINAL HISTORY DATING BACK 10 YEARS. COURT RECORDS SHOW FELONY CONVICTIONS FOR FAMILY VIOLENCE AND MISDEMEANOR CONVICTIONS. >> WE ARE LOOKING AT NOT ONLY MENTAL HEALTH , BUT SUBSTANCE ABUSE AND HIS PRIOR HISTORY TO SEE WHAT THE MOTIVE WAS. AND WE HAVE TO LOOK AT GIVEN HIS HISTORY, WHERE THE SYSTEM FAILED , IF THAT WERE THE CASE. >> Reporter: WE TALKED TO NEIGHBORS, THEY SAY POLICE WERE HERE OFTEN BUT THURSDAY NIGHT WAS DIFFERENT, THEY KNEW IT WAS WORSE BECAUSE OF THE RESPONSE FROM THE POLICE. >> THERE WAS JUST A LOT OF THEM COMING IN AND OUT OF THE HOUSE, SO WE THOUGHT, BEFORE THEY WERE JUST TRYING TO CALM HIM DOWN AND BRING HIM OUT. >> Reporter: NEIGHBORS SAY IT IS DEVASTATING TO LEARN THAT SO MANY PEOPLE HAVE BEEN HURT FROM ONE MAN IN ONE AFTERNOON. >> I JUST HURT FOR ALL THE FAMILIES INVOLVED, THAT IS TRAUMATIC. >> Reporter: ON THURSDAY, THEY WERE UNPREPARED FOR THE THOUGHT THAT HE COULD HARM OTHERS. >> WE NEVER HAD ANY FEARS OR ANYTHING LIKE THAT, IT WAS JUST A POOR NEIGHBOR AGAIN HAVING ANOTHER EPISODE. >> Reporter: AS YOU HEARD THE POLICE CHIEF, THEY ARE UNCLEAR ON THE MOTIVE TONIGHT SO THEY ARE ASKING THE PUBLIC TO COME FORWARD IF YOU HAD ANY INTERACTIONS WITH SUSPECT, THAT COULD HELP THEM IN
