SOURCE: AP, AP IMAGES, HANDOUT, POOL, ONSCENE.TV

VOICE-OVER SCRIPT:

IN SOUTHERN CALIFORNIA ... THE SEARCH FOR A FORMER LOS ANGELES POLICE OFFICER ACCUSED OF CARRYING OUT A KILLING RAMPAGE GOES ON ...

FROM A SNOWY MOUNTAIN IN SAN BERNADINO COUNTY ABOVE LOS ANGELES ... SWAT TEAM MEMBERS ON A SNOW-CAT ARE COMBING AN AREA AROUND THE BURNED-OUT TRUCK OF CHRISTOPHER DORNER ...

SOUNDBITE: Sheriff John McMahon, San Bernardino County

"We searched all night, we did not discover any additional evidence and we certainly did not locate him."

THEY HAD WHAT APPEARED TO BE HIS TRACKS ... BUT LOST THEM IN THE FROZEN SNOW.

SOUNDBITE: Jay Obernolte, Mayor of Big Bear Lake

"Is there panic in our community up here in Big Bear because of this situation? Uh, no, there's no panic. We're very hearty residents here in the San Bernardino Mountains. Many of the people here are armed ... "

LAW ENFORCEMENT AROUND THE REGION ... ON EDGE BECAUSE DORNER PROMISED IN RAMBLING WRITINGS TO BRING WARFARE TO POLICE AND THEIR FAMILIES ... HE WAS FIRED IN 2008 ... THEN ON SUNDAY, ALLEGEDLY BEGAN KILLING ... FIRST A COUPLE WITH TIES TO THE INVESTIGATION PUSHING HIM OFF THE FORCE ... THEN FATAL SHOTS AT ONE POLICE OFFICER ... ATTEMPTS AT TWO OTHERS.

SOUNDBITE: Clint van Zandt, Former FBI Profiler

SOT: Between the weaponry that he has, the training that he has, the exhibited ability and desire to kill and his statement that he doesn't plan on living through this, it probably makes him one of the most dangerous people we've gone up against in a while ...

AUTHORITIES ARE MAKING THIS VOW ...

SOUNDBITE: Sheriff John McMahon, San Bernardino County

SOT: We're going to continue searching until either we discover that he left the mountain or we find him, one of the two.

UNTIL DORNER IS FOUND ... THE SEARCH ACROSS A WORRIED REGION GOES ON.

LEE POWELL, THE ASSOCIATED PRESS