In what Denver area police are calling a "suicide mission," two high-school juniors, 18-year-old Eric Harris and 17-year-old Dylan Klebold, have been identified as the heavily armed gunmen who massacred at least 15 students and teachers and wounded at least 23 more people yesterday at Columbine High School in Littleton, Colorado.

The incident at Columbine is the worst case of school violence in United States history.

As of press time, the bodies of the deceased assassins, along with at least 15 of their victims, remain inside the high school, which is still considered an unsafe area because of potential explosive devices. The bodies of both teenage shooters as well as one of the suspects' cars were apparently wired to detonate.

According to students who witnessed the shootings, the suspects may have been targeting athletes, minorities, and even classmates wearing hats.

No motive has been determined yet.

Beginning with Wednesday's edition of "Total Request Live,"

MTV News will be bringing you reports from the scene in Littleton.

And as part of MTV's "Fight For Your Rights: Take a Stand Against Violence," MTV News will broadcast "Warning Signs," a special report that might help you spot signs of violent behavior in your classmates -- or even yourself.

"Warning Signs" airs this Thursday at 4:30 p.m. (ET) following "Total Request Live."

You can find out more by checking out MTV's site at www.fightforyourrights.mtv.com.