Rockfall in Cinque Terre

There have been reports of a rockfall in Italy:
 http://www.abc.net.au/news/2012-09-25/rockslide-in-italian-tourist-spot-injures-four-australians/4278630

Seemingly this rockfall occurred on the Via dell'Amore (the path connecting Riomaggiore to Manarola) - the most famous and popular of the Cinque Terre trails, a wide, well-graded path and certainly not an adventurous track. And from what I've read so far, the rockfall appeared to have "just happened" (albeit that the wet weather a few months back may have been the underlying cause).  There's been no mention of an immediate trigger event, such as an earth tremor or heavy rain at the time.


Not only did we walk this path last year, but what brings the impact even closer to home is that one of the four Victorian women involved is a friend of Sue's, who saw her just before she left for Europe.