The student who killed 32 people in America's worst ever university shooting incident at Virginia Tech University sent a package to the US TV network NBC News on the day of the shootings, police officials have told.

|PIC1|It has now emerged that the two-hour gap between the shootings was the time Cho Seung-hui used to post the haunting package to the news station.

NBC said that the package contained "disturbing" photographs, video and writings, with the video showing Cho angrily wielding guns and pointing them at the camera.

On the video Cho said: "You had a hundred billion chances and ways to have avoided today.

"But you decided to spill my blood. You forced me into a corner and gave me only one option. The decision was yours. Now you have blood on your hands that will never wash off. I didn't have to do this. I could have left. I could have fled. But now I will no longer run."

As the disturbing developments emerged Wednesday, the Presbyterian minister of Virginia Tech University spoke publicly about the tragic events.

"I received a phone call from my spouse who is a faculty member saying there had been a shooting on the campus. This is a small town with a large university and any kind of violence of this sort is terribly shocking," Catherine Snyder told.

At the time of the call, Snyder explained that she had been advised by police to remain in her office until the area had been secured.

Police are still yet to officially link Cho to any of those killed, but say the same gun was used at both locations. They also said they have not definitely proved that Cho was at one of the locations at the time of the shootings there.

Students expressed disgust and disbelief at the shocking video rant sent to the television network.

Cho has been described by lecturers and fellow-students as a loner and a deeply disturbed and troubled student, with a paranoia and hatred for those he perceived to be rich and successful around him: "You have never felt a single ounce of pain your whole life. And you want to inject as much misery in our lives because you can, just because you can," Cho said on the video.

"You had everything you wanted. Your Mercedes wasn't enough, you brats. Your golden necklaces weren't enough, you snobs. Your trust fund wasn't enough. Your vodka and cognac wasn't enough. All your debaucheries weren't enough. Those weren't enough to fulfill your hedonistic needs. You had everything. When the time came, I did it. I had to."

Graduate student Nick Jeremiah, 34, reacted to the video: "He kills two people and then goes to the post office and then he's ready for round two? It's creepy."

Jeremiah added: "He just goes on and on - that's got to be more than he's spoken, ever," according to Reuters.

Virginia Tech Presbyterian minister Catherine Snyder asked for British Christians to pray for those involved in the tragedy: "We would deeply appreciate the prayers of your listeners and all their friends and family members. We need prayers for all who have been injured; we need prayers for the loved ones of those who have died."

She added, "We need prayers for all who have the responsibility to work with this community to try to bring healing whether they are administrators or faculty or staff. I think we need the kinds of prayers you would offer for anyone who has experienced a horrible tragedy," according to Premier Radio.

Snyder has served as Presbyterian Campus Minister at Virginia Tech since 1995, where she helps support the spiritual needs of the 26,000 students and 10,000 staff.

She explained that her role now was "to work with, I hope, people in the university and other campus ministry and area clergy to respond as pastorals as we can, to grieve together and seek to heal together."