A small plane has just hit (11:45, EDT) the tallest building in Milan, Italy. It's 30 stories high, housing local government offices, and the plane hit around the 26th floor. Smoke is coming from the building, and an Italian legislator has already declared that it was a terrorist attack, though that's an unofficial announcement.
[Update: it seems that the legislator may have been jumping the gun to get himself on television; it now appears as if it may have been an accident. Only two people have been confirmed killed, but dozens have been hospitalized. Still, we're all jumpy, for obvious reasons.]