< ! -- Deleted image removed : Warren Ellis took over the title in 1999 , after his work on '' Transmetropolitan '' which had moved to the Vertigo imprint , following the closure of Helix Comics . He was meant to become a full-time writer for several years , as Delano , Ennis and Jenkins before him , but left the title early after DC refused to publish the story " Shoot " , about high school shootings , following the Columbine High School massacre , despite the fact it had been written and submitted prior to the event . The story was finally published in 2010
Columbine High School massacre
Columbine High School massacre
Hellblazer