German police say they have thwarted a plot by two students to carry out a massacre at Georg-Buechner high school in Cologne, reports the British Broadcasting Corporation. Rolf B., aged 17, committed suicide after being questioned about the plot and his alleged accomplice, [Robin G.], 18, is under arrest the suspects were spotted by classmates studying pictures of the [1999 U.S.] Columbine school massacre. They had planned to attack their school on November 20. Air guns and crossbows were later found during searches at the suspects homes. A possible hit list of students and teachers was also discovered. But Robin G. told police that the two had abandoned their plans [five] weeks ago, reports Agence France-Presse. His claim was backed up by analysis of computers seized from their home. At Geschwister Scholl school in Emsdetten, a gunman, reported to have been a former pupil of the school, apparently killed himself as police circled the building on November 20, after he stormed the school, injuring a teacher and several pupils, reports the British Broadcasting Corporation.