Enraged at a failed relationship with his girlfriend, police Superintendent Chippa Mateane stormed into her Krugersdorp house, locked all the doors and began his bloody massacre. Eight hours later he lay dead, following a shoot-out with his colleagues, who were forced to hunt him down. In total, 10 people - including girlfriend Poppy Mosia and two other women, a one-year-old boy and four senior police officers - had been slain.

Be careful who you invite to your after party. On Saturday, 25 March 2006, Aaron left the one he was invited to at 7am and returned armed with a 12-gauge Winchester Defender shotgun with an extended magazine and a pistol grip, and a .40-caliber Ruger semiautomatic handgun.

He killed two guests on the steps and front porch of the home, and then forced his way inside and killed three more in the living room. A sixth died at a local hospital and two others were seriously wounded.

Our first girlie on the site went postal (yes, she's a postal worker) by first shooting her neighbour and then visited her former place of work and killed six more with a 9mm automatic pistol at a New Mexico mail center.

Jeff Weise was a neo-Nazi and openly admired Adolf Hitler. Did this guy ever look into a mirror? Hitler would have thrown him into the gas chambers along with the rest of the Jews.

Jeff first shot his grandparents in their home and then went on the rampage through his Red Lake School at an Indian reservation yesterday, killing randomly, before exchanging gunfire with police and eventually shooting himself.

Yesterday Ratzmann fired 22 bullets during a service at the Living Church of God's service at the Sheraton hotel in Brookfield, Milwaukee, killing seven members of his church before taking his own life.

Terry was a 44 year old loner and lived with his mother. He told fellow church members he was depressed and suicidal a decade ago, had purchased a handgun and slept with it under his pillow. He also learned recently that he might lose his job as a computer technician.

Having 10 sprogs to support by four different women is enough to drive anyone to mass murder. It certainly was for Chai.

Chai shot and killed six hunters when they confronted him for shooting on private land.

"Do you want me to tie you up, or do you want to die? "The voice belonged to Salvador Tapia, a co-worker who had been fired from the warehouse six months earlier."I said, `Tie me up.' I didn't want to die," Sanchez said.

Salvador was fired from his job at an auto parts company six months ago, Salvador returned with a handgun and shot six former co-workers, killing them all.

Robert was bent on revenge after being expelled from his school. He had been pretending to his parents he was still going to school each day. Robert entered his school in Erfurt, Germany carrying a bag containing a pump-action shotgun, a pistol and more than 500 rounds of ammunition and shot dead 14 teachers, two students and a police officer.