Sun-Kyung Cho, sister of Virginia Tech gunman Seung-Hui Cho has released the following statement in response to the worst school shooting massacre in the history of the U.S.

As experts pored over Cho Seung Hui's twisted writings and his videotaped rant today, parents and officials urged people to instead focus on the victims of the deadliest rampage by a lone gunman in modern US history.

University authorities said they will not name those killed until all of them have been identified and their families informed.

Families in India and Israel today mourned two professors among the 32 people killed in a shooting rampage at an American university, while the leader of Australia slammed US gun culture.

An Israeli lecturer who died in the massacre at a US university saved the lives of several students by blocking the doorway of his classroom from the approaching gunman before he was fatally shot, his relatives told Israeli media today.