At least one gunman has killed as many as 20 people at Virginia Tech, according to the BBC:
At least 20 people have been killed and more injured after a gunman went on the rampage at the campus of Virginia Tech university in Virginia, US.
Police say there were two separate shooting incidents - one at West Ambler Johnston Hall, a student dormitory, and Norris Hall, an engineering building.
The incidents were about two hours apart. Police say that the gunman at Norris Hall is dead.
Hot Air says the gunman -- so far it looks like only one -- carried an ammo vest and shot students in classrooms indiscriminately. I'll have more as details become available.
UPDATE: The two shootings were two hours apart. The first occurred in a student dorm where an ID would be required for access. The second occurred in an engineering building.
UPDATE II: The White House presser has started, and of course the first questions are about gun control. Reporters want to know whether gun control would have prevented this. It didn't prevent a sniper from targeting people in Washington DC a couple of years ago, though.
UPDATE III: "The gunman is deceased." No one knows whether he killed himself in Norris Hall, or whether law enforcement officers killed him.
UPDATE IV: Here's a question -- why didn't VT lock the campus down after the first shooting? They apparently only locked it down after the second shooting, according to the student being interviewed now on Fox.
UPDATE V: ABC News says the casualty count has risen to 25 dead, and it may go higher. And regarding gun control, perhaps armed students could have been able to defend themselves -- but that's going to be a debate that will satisfy no one, and is best saved for later.
UPDATE VI: CNN wonders how the gunman made it across campus after the first shooting to attack three hours later. They report that VT did lock the campus down after the first shooting, but then lifted the lockdown -- and that's when the second set of shootings occurred. Bear in mind that these details will almost certainly be incomplete at best, and that information later will likely be better.
UPDATE VII: Now ABC reports 29 confirmed dead at the same link. CNN is questioning the security plan for Virginia Tech, and given that the school had just had a series of bomb threats, it's a question that many will be asking.
UPDATE IX: Now it's 32 dead. More can be found at Planet Blacksburg. (h/t CQ reader Hugho)
UPDATE X: President Bush will speak in a few minutes. ABC News says the number of dead has been confirmed at 29, slightly better news than before. They also report that there was only one gunman and he was wearing a bulletproof vest.
UPDATE XI: CNN expert: "Why are these cops [in the student video] standing around? ... They get their ass in the building in order to stop this thing. ... We need to have these guys inside that building and finding that threat. ... Society has really put a clamp on their ability to be aggressive." That sound pretty harsh, especially based on one cell-phone video.
UPDATE XII: 33 confirmed deaths overall, including the gunman. He had no ID, but they're still working on finding out who he is. The earlier incident in the Ambler Johnston dorm was "domestic in nature", which tends to confirm some of the rumors about a love triangle prompting the shooting.
UPDATE XIII: The police chief and the university president will not state whether the two shootings are related. Also, some of the Norris Hall doors apparently were chained from the inside, which the chief described as "unusual". The shooter may have prepped the building to keep people from getting out of or into the building.