Police scour the Columbine campus for hidden explosives

RELATED VIDEO: Media from around the world converge on Colorado, along with CNN's Anne McDermott (April 23) Windows Media 28K 80K Correspondent Deborah Feyerick reports on the use of cell phones by students and how school officials feel about them Real 28K 80K Windows Media 28K 80K The shooting has brought the debate over gun control into the forefront. CNN's Judy Woodruff explains. (April 22) Real 28K 80K Windows Media 28K 80K Security is not the same at all schools. CNN's Eileen O'Connor reports. (April 22) Real 28K 80K Windows Media 28K 80K To view the latest video streams on the Littleton school shooting, use the arrow buttons below to scroll through the video gallery.        Windows Media Real        28 K 80 K INTERACTIVE: See more scenes from the shooting Audio and Images Interactive Map: Recent school shootings in the U.S. Special: Are schools safe?  ALSO: Shooting sparks renewed political debate over guns Fatalities at Columbine High List of injured from Colorado school attack The aftermath Detailed map of Columbine High School Harris hinted at violence to come  MESSAGE BOARD: Colorado school shooting

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Are schools safe?

Weapons found during the investigation: One 9 mm semi-automatic pistol One 9 mm semi-automatic rifle Two sawed-off 12-gauge shotguns More than 30 homemade explosives, some with shrapnel

Some guns traced, but no link to 2 teens

April 23, 1999
Web posted at: 11:46 a.m. EDT (1546 GMT)

In this story: Guns changed hands Video could be 'crucial' Federal help Gore to attend Sunday memorial RELATED STORIES, SITES

LITTLETON, Colorado (CNN) -- Authorities, who suspect other people were involved in the Columbine High School massacre or in efforts to booby-trap the school, may be helped by video from a security camera, CNN was told on Friday.

Meanwhile, President Clinton announced $1.5 million in federal aid to help victims of the gun and bomb rampage that left 15 people dead, including the two teen-age killers.

Authorities have found no physical evidence against anyone but gunmen Eric Harris, 18, and Dylan Klebold, 17, but say the elaborate nature of Tuesday's attack in the Denver suburb of Littleton suggested the work of several people.

Guns changed hands

The device, with nails and other shrapnel attached, was removed without incident.

Aside from the large bomb, searches have turned up more than 30 homemade explosives, including pipe bombs and crude hand grenades. More may still remain hidden, authorities said.

Two sawed-off shotguns, one semi-automatic rifle and one semi-automatic handgun also have been found.

The rifle and handgun have been traced to their original owner but Jefferson County Sheriff's Department spokesman Steve Davis said Friday there was no link to Tuesday's gunmen.

"We don't know how many times those guns changed hands before getting to our suspects," he said.

Investigators were still trying to trace the shotguns.

Colorado Gov. Bill Owens, who toured the school on Friday, left saying investigators are all but certain the two gunmen had help.

"There are backpacks with bombs in there everywhere," Owens said. "The officers in there are convinced there had to be more people involved. There's just too much stuff in there."

Video could be 'crucial'

Time-lapse security cameras mounted throughout the school do not run continuously, though they record about a week at a time, said Lt. John Kiekbusch of the Jefferson County Sheriff's Department.

A surveillance video from Saturday night, when there was an after-prom party at the school, "has the potential to be extremely important," he said.

"We don't know how much (of) that time period might turn out to be on those videos, but it certainly has the potential to be very, very crucial evidence in terms of movement of people throughout that school," Kiekbusch said.

"Ideally," he said, "they would show the movement and also the actual placement perhaps of some of the explosive devices, prior to the incident. If that's the case we have got just very important evidence."

Federal help

The $1.5 million in federal aid announced by Clinton would help victims pay for funerals, medical expenses, lost wages and counseling.

The money is an initial payment to help the students, teachers and parents in Littleton on "their long journey toward recovery. And we will do more," the president said.

Clinton says $1.5 million in federal aid will help families in Littleton, Colorado, meet funeral and medical expenses

"The images from Colorado have become painfully familiar: the terrified children, the racing ambulances, the grieving families," Clinton said outside the White House.

"Still, it is important to remember that the vast majority of schools are safe," he added.

The president also reminded school officials across the country of federal programs to help prevent violent eruptions of rage. Among them:

• Early warning guides sent to 200,000 schools in August will be reprinted and distributed next week to 150,000 additional schools.
  
  
• Schools have until the end of this month to apply for a portion of the $17 million available for school crime prevention programs.
  
  
• Local communities have until June 1 to apply for some $180 million in Safe Schools/Healthy Students grants, a federal anti-violence and anti-drug-abuse initiative.
  
  
• A total of $70 million is available from the Justice Department for stationing some 600 police officers for school security in 336 communities around the country.

Gore to attend Sunday memorial

Next to Columbine High School, in Clement Park, a Sunday afternoon memorial service is planned for the one teacher and 12 students gunned down before their two murderous classmates turned their guns on themselves.

Bicycles sit behind police tape near the front entrance of Columbine High School

Vice President Al Gore and his wife, Tipper, planned to attend. Clinton was staying in Washington for the three-day NATO summit which began on Friday.

With Columbine closed indefinitely, Principal Frank DeAngelis said students will resume classes at a building off campus next week. He told CNN that, despite the tragedy, students want to return to the building someday.

"They said, 'Mr. DeAngelis, don't let them take our building from us, no one is going to chase us out, we have too much tradition there, too much pride, it's a great high school, we want back in,'" the principal said.

The principal said there was little that could have been done to prevent the attacks. "One (law enforcement agent) made the comment that the National Guard could ... not (have) prevented this," he said.