'The gunman, Cho Seung-hui, was a student at the university
Lives might have been saved if Virginia Tech officials had acted sooner after student Cho Seung-hui's first killings, a state report into the shootings says.
"Warning students, faculty and staff might have made a difference," it says.
The independent panel also concluded that though Cho had demonstrated signs of mental instability earlier, college staff had not intervened effectively.
Cho killed 32 people and himself at the US university in April in the deadliest shooting rampage in modern US history.'
